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Version 001 – gen physics first semester practice final – gleue – (315192) This print-out should have 100 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. Distance Conversions 001 (part 1 of 3) 10.0 points Express the length of a 230 yd dash in meters. Correct answer: 210.312 m. 002 (part 2 of 3) 10.0 points Express the length of a marathon run of 26 mi 385 yd in meters. Correct answer: 42186 m. 003 (part 3 of 3) 10.0 points Express the distance 3273 mi from Seattle, Washington, to Miami, Florida, in meters. Correct answer: 5.26626 × 106 m. Elevator Speed 004 (part 1 of 2) 10.0 points The elevators in the John Hancock building in Chicago move 876 ft in 31 s. What is their speed? 5. 1.518 × 106 km 6. 1.518 × 1010 km 7. None of these Building a Fence 007 10.0 points John and Mary Smith plan to put a wooden fence around their yard in order to keep the mean cats away from their dog Fido. There is a gate that is 3.27 m long which is not included as part of the length of the fence. What total length of fence is required to enclose a rectangular yard whose sides are 22.1 m and 69.9 m in length? 1 m = 3.281 ft . Correct answer: 592.975 ft. Height of a Fountain 008 10.0 points A high fountain of water is located at the center of a circular pool as in the figure. A student walks around the pool and estimates its circumference to be 196 m. Next, the student stands at the edge of the pool and uses a protractor to gauge the angle of elevation of the top of the fountain to be 46.1◦ . Correct answer: 8.61306 m/s. 005 (part 2 of 2) 10.0 points What is this speed in miles per hour? Correct answer: 19.2675 mi/h. Holt SF 01A 0402 006 10.0 points The distance between the sun and the Earth is about 1.518 × 1011 m. Express this distance in kilometers. 1. 1.518 × 108 km correct 2. 1.518 × 107 km 3. 1.518 × 1011 km 4. 1.518 × 109 km 1 How high is the fountain? Correct answer: 32.4158 m. Serway CP 01 39 009 (part 1 of 3) 10.0 points Consider the triangle shown in the figure. Version 001 – gen physics first semester practice final – gleue – (315192) 2 y θ 14 m φ 7.3 m What is the length of the unknown side? Correct answer: 11.9461 m. 010 (part 2 of 3) 10.0 points Find the tangent of θ . Correct answer: 0.611077. 011 (part 3 of 3) 10.0 points Find the sin of φ . Correct answer: 0.853295. Serway CP 01 46 012 10.0 points A surveyor measure the distance across a straight river by the following methods: Starting directly across from a tree on the opposite bank, she walks 142 m along the river bank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is 42.4◦ . How wide is the river? Correct answer: 129.664 m. Straight Line Equation 013 10.0 points A graph of a straight line going through two points is shown below. 5 4 3 2 b 1 0 −1 −2 −3 −4 −5 −5 x b −3 −1 0 1 2 3 4 5 What is the equation of this line? 5 1. y = − x + 6 6 2. y = + x + 5 5 3. y = + x − 6 5 4. y = − x − 6 5 5. y = + x − 6 6 6. y = − x + 5 5 7. y = − x + 6 5 8. y = − x − 6 6 9. y = + x − 5 6 10. y = − x − 5 13 6 13 6 13 5 13 correct 6 13 6 13 5 13 5 13 5 13 6 13 6 Volume 50 014 10.0 points Calculate the volume of a ball that has a diameter of 7.9 inches. 1 inch = 2.54 cm 4 exactly. V = π r 3 . 3 Correct answer: 4230.4 cm3 . Ant Race 015 10.0 points Version 001 – gen physics first semester practice final – gleue – (315192) Two ants race across a table 63 cm long. One travels at 5.17 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line, how far behind is the second one? x 5. 7. tQ tR tS tP 0 Which graph shows the corresponding displacement x as a function of time t for the same time interval? x 1. t tR tS tP x t tQ tR tS tQ tR tS tP x 0 t tQ tR tS tP x t 0 tQ tR tS tP Displacement and Distance 017 (part 1 of 2) 10.0 points A physics book is moved once around the perimeter of a table of dimensions 1 m by 3 m. If the book ends up at its initial position, what is the magnitude of its displacement? 1. 3 m 2. 1 m 2. 0 8. t 9. t tQ x 0 The graph shows the velocity v as a function of time t for an object moving in a straight line. v 0 t tQ tR tS tP 0 6. None of these graphs is correct. Correct answer: 14.2574 cm. AP M 1998 MC 3 016 10.0 points 3 3. 5 m tP x 4. 2 m 3. 5. 8 m t 0 correct tQ tR tS tP 6. 7 m 7. None of these x 8. 0 m correct 4. 9. 4 m t 0 tQ tR tS 10. 6 m tP 018 (part 2 of 2) 10.0 points What is the distance traveled? Version 001 – gen physics first semester practice final – gleue – (315192) 4 she begins to slow down? 1. 1 m Correct answer: 13.44 m. 2. 2 m 3. 6 m 4. 4 m 5. 0 m Displacement Curve 02 022 (part 1 of 2) 10.0 points Consider a moving object whose position x is plotted as a function of the time t. The object moved in different ways during the time intervals denoted I, II and III on the figure. 6. 3 m 6 x 7. 7 m 8. 8 m correct 9. 5 m 4 2 I 10. None of these Displacement 02 019 (part 1 of 2) 10.0 points John runs at 4.6 m/s for 7.54 s along the x axis. How far does John run? II 2 020 (part 2 of 2) 10.0 points What relationship should be used to solve this situation? 3. During interval II 3. x = v − t 4. None of these 5. x = v + t Darting Child 021 10.0 points Ann is driving down a street at 63 km/h. Suddenly a child runs into the street. If it takes Ann 0.768 s to react and apply the brakes, how far will she have moved before 6 1. Same speed during intervals II and III 2. During interval I v 2. x = t 4 t During these three intervals, when was the object’s speed highest? Do not confuse the speed with the velocity. Correct answer: 34.684 m. 1. x = v t correct III 4. Same speed during each of the three intervals. 5. During interval III correct 023 (part 2 of 2) 10.0 points During which interval(s) did the object’s velocity remain constant? 1. During interval II only 2. During interval I only 3. During none of the three intervals 4. During interval III only 5. During each of the three intervals cor- Version 001 – gen physics first semester practice final – gleue – (315192) rect 4. 20 m/s Distance Time Graph 01 024 (part 1 of 6) 10.0 points Consider the following graph of motion. 5. 15 m/s 027 (part 4 of 6) 10.0 points Consider the following graph of motion. 400 40 350 30 300 Distance (m) Distance (m) 50 20 10 0 5 0 1 2 3 4 Time (sec) 5 150 50 0 0 1 2 3 4 5 6 Time (sec) 7 8 9 How far did the object travel between 3 s and 9 s? 2. 50 m 1. 450 m 3. 10 m 2. 50 m 4. 30 m 3. 100 m 5. 20 m correct 4. 200 m 025 (part 2 of 6) 10.0 points The graph indicates 200 100 How far did the object travel between 2 s and 4 s? 1. 40 m 250 5. 250 m 6. 350 m correct 1. no motion. 7. 300 m 2. constant velocity. correct 8. 500 m 3. decreasing velocity. 9. 400 m 4. constant position. 10. 150 m 5. increasing velocity. 026 (part 3 of 6) 10.0 points What is the speed from 2 s to 4 s? 028 (part 5 of 6) 10.0 points The graph indicates 1. constant velocity. 1. 0 m/s 2. decreasing velocity. 2. 5 m/s 3. no motion. 3. 10 m/s correct 4. increasing velocity. correct Version 001 – gen physics first semester practice final – gleue – (315192) 5. constant position. 029 (part 6 of 6) 10.0 points What is the average speed from 3 s to 9 s? 6 After they completed their trip, what is their mean speed for the trip? 1. 50 mph 2. 100 mph 1. 47 m/s 3. 25 mph correct 2. 20 m/s 4. 0 mph 3. 40 m/s 5. 12.5 mph 4. 36 m/s 5. 58 m/s correct 032 (part 3 of 3) 10.0 points What is their mean speed from when they leave Austin and first arrive in Waco? 6. 25 m/s 1. 25 mph South 7. 60 m/s 2. 50 mph North 8. 50 m/s 3. 25 mph North 9. 30 m/s 4. 25 mph Rabid Longhorn Fans 030 (part 1 of 3) 10.0 points Rabid Texas basketball fans have been known to rush out of their laboratory class at 5:00 p.m. and immediately get on highway I-35 to arrive in Waco, 100 miles away, at 7:00 p.m. to see the Baylor-Longhorn basketball game. They spend 4 hours watching and then celebrating the outcome of the game, and then drive 2 hours back to Austin. After they completed their trip, what is their mean velocity for their trip? mph is miles per hour 5. 50 mph correct 6. 50 mph South Train Motion 033 10.0 points The plot shows x(t) for a train moving along a long, straight track. x 1. 0 mph correct 2. 100 mph t 3. 50 mph 4. 12.5 mph 5. 25 mph 031 (part 2 of 3) 10.0 points Which statement is correct about the motion? 1. The train at first speeds up, then slows Version 001 – gen physics first semester practice final – gleue – (315192) 7 down. 4. During interval III only correct 2. The train at first slows down, then speeds up. 3. The train continually slows down and comes to rest. correct 5. During both intervals I and II 6. During interval II only 7. During both intervals II and III 4. The train moves at constant velocity. 5. The train continually speeds up. 6. The train in fact moves at constant speed along a circular path described by the x(t) curve. 036 (part 2 of 4) 10.0 points During which interval(s) did the object have no change in displacement? 1. During interval II only 2. During each of the three intervals Acceleration of a Vehicle 034 10.0 points A car traveling in a straight line has a velocity of 5.46 m/s at some instant. After 4.49 s, its velocity is 9.28 m/s. What is its average acceleration in this time interval? 3. During intervals II and III 4. During interval I only correct 5. During none of the three intervals 6. During interval III only Correct answer: 0.85078 m/s2 . Displacement Curve 035 (part 1 of 4) 10.0 points Consider a moving object whose position x is plotted as a function of the time t. The object moved in different ways during the time intervals denoted I, II and III on the figure. 037 (part 3 of 4) 10.0 points During which interval(s) did the object’s velocity remain constant? 1. During none of the three intervals 2. During each of the three intervals correct x 3. During interval I only 3 2 4. During interval III only 1 5. During interval II only O I 1 II 2 III 3 t When was the object’s speed highest? 1. Same speed during all three intervals 2. During both intervals I and III 3. During interval I only 038 (part 4 of 4) 10.0 points During which interval(s) does the object have non-zero, positive acceleration? 1. During none of the three intervals correct 2. During interval II only Version 001 – gen physics first semester practice final – gleue – (315192) 3. During interval III only 8 is 9.8 m/s2 and the maximum height is 3.7 m . Neglect air resistance. 4. During interval I only Correct answer: 0.868966 s. 5. During each of the three intervals Correct answer: 1.66 s. Ball N 03 042 10.0 points A ball is thrown upward. hmax b bbbb b b b b b b 9.3 m/s Holt SF 02B 01 039 10.0 points When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 5.0 m/s2 as it slows from 8.3 m/s to 0 m/s. Find the time interval of acceleration for the bus. b b b b b b b b Motion 08 040 10.0 points What is the acceleration of an object that takes 20 s to change from a speed of 200 m/s to 300 m/s? b What is its time interval between the release of the ball and the time it reaches its maximum height? Its initial vertical speed is 9.3 m/s and the acceleration of gravity is 9.8 m/s2 . Neglect air resistance. 1. 5 m/s 2. 5 m/s/s correct 3. 100 m/s/s Correct answer: 0.94898 s. b b b b b b b b bbb bb b b b b b v0 v0 b bbbb b b b b b b Ball N 02 043 10.0 points A ball is thrown upward. 3.7 m Ball N 04 041 10.0 points A ball is thrown upward. b b b b b b b b b b 5.8 m 4. 100 m/s b What is its time interval between the release of the ball and the time it reaches its maximum height? The acceleration of gravity What is its initial vertical speed? The acceleration of gravity is 9.8 m/s2 and maximum Version 001 – gen physics first semester practice final – gleue – (315192) height is 5.8 m ,. Neglect air resistance. 3. Acceleterion, speed, velocity Correct answer: 10.6621 m/s. 4. Acceleration, age, speed, temperature Dropped Golf Ball 044 (part 1 of 2) 10.0 points A golf ball is released from rest from the top of a very tall building. Choose a coordinate system whose origin is at the starting point of the ball, and whose y axis points vertically upward. Neglecting air resistance, calculate the velocity of the ball after 2.95 s. The acceleration of gravity is 9.8 m/s2 . 5. Speed and temperature 9 6. Acceleration and velocity correct 7. Acceleration, speed, temperature 8. Acceleration, age, speed 9. Age and temperature 10. Age, speed, temperature Correct answer: −28.91 m/s. 045 (part 2 of 2) 10.0 points What is the position of the ball after 2.95 s? Neglect air resistance. Correct answer: −42.6423 m. Blown Off Course 046 (part 1 of 2) 10.0 points A ship is expecting to travel to its home port 540 km due East. Before the ship starts to travel, a severe storm comes up and blows the ship 350 km due South. How far is the ship from its home port? Holt SF 03A 01 049 (part 1 of 2) 10.0 points A truck driver attempting to deliver some furniture travels 9 km east, turns around and travels 5 km west, and then travels 13 km east to his destination. What distance has the driver traveled? Correct answer: 27 km. 050 (part 2 of 2) 10.0 points What is the magnitude of the driver’s total displacement? Correct answer: 17 km. Correct answer: 643.506 km. 047 (part 2 of 2) 10.0 points At what angle North of East must the ship travel to reach its destination? Let East be 0◦ and North 90◦ . Correct answer: 32.9492◦. Hewitt CP9 05 E27 048 10.0 points Which of acceleration, age, speed, temperature, and velocity are vector quantities? Holt SF 03A 02 051 (part 1 of 2) 10.0 points While following the directions on a treasure map, a pirate walks 22.8 m north, then turns and walks 2.4 m east. What is the magnitude of the single straight-line displacement that the pirate could have taken to reach the treasure? Correct answer: 22.926 m. 1. All are vectors. 052 (part 2 of 2) 10.0 points At what angle with the north would he have to walk? 2. All are scalars. Correct answer: 6.00901◦ . Version 001 – gen physics first semester practice final – gleue – (315192) Holt SF 03B 03 053 (part 1 of 2) 10.0 points A truck travels up a hill with a 7.4 ◦ incline. The truck has a constant speed of 28 m/s. What is the horizontal component of the truck’s velocity? Correct answer: 27.7668 m/s. 054 (part 2 of 2) 10.0 points What is the vertical component of the truck’s velocity? Correct answer: 3.60628 m/s. Holt SF 03Rev 29 055 (part 1 of 2) 10.0 points A person walks the path shown. The total trip consists of four straight-line paths. 104 m N 434 m W E S 213 m 15.0◦ 59.0◦ m 284 At the end of the walk, what is the magnitude of the person’s resultant displacement measured from the starting point? Correct answer: 669.908 m. 056 (part 2 of 2) 10.0 points What is the direction (measured from due west, with counterclockwise positive) of the person’s resultant displacement? Correct answer: 68.2708◦. Holt SF 03D 01 057 10.0 points An autographed baseball rolls off of a 0.91 m high desk and strikes the floor 0.84 m away from the desk. 10 How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s2 . Correct answer: 1.9502 m/s. Dropping Medical Supplies 058 10.0 points A plane drops a hamper of medical supplies from a height of 3480 m during a practice run over the ocean. The plane’s horizontal velocity was 106 m/s at the instant the hamper was dropped. What is the magnitude of the overall velocity of the hamper at the instant it strikes the surface of the ocean? The acceleration of gravity is 9.8 m/s2 . Correct answer: 281.858 m/s. Range of a Long Jump 059 (part 1 of 2) 10.0 points A long jumper leaves the ground at an angle of 19.2 ◦ to the horizontal and at a speed of 10.5 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Correct answer: 6.98791 m. 060 (part 2 of 2) 10.0 points What maximum height does he reach? Correct answer: 0.608362 m. Shooting an Arrow 061 (part 1 of 2) 10.0 points An arrow is shot at an angle 35 ◦ with the horizontal. It has a velocity of 49 m/s. How high will the arrow go? The acceleration of gravity is 9.8 m/s2 . Correct answer: 40.3013 m. 062 (part 2 of 2) 10.0 points What horizontal distance will it travel? Correct answer: 230.225 m. Version 001 – gen physics first semester practice final – gleue – (315192) 5. 1, 2, and 3. Forces 08 066 10.0 points A push or pull that gives energy to an object, causing that object to start moving, stop moving, or change its motion is ◦ 53 1. inertia. 7.47 m Cliff 11 .2 m /s Tipler PSE5 03 88 063 (part 1 of 2) 10.0 points A 0.34 kg projectile is fired into the air from the top of a 7.47 m cliff above a valley. Its initial velocity is 11.2 m/s at 53 ◦ above the horizontal. 11 2. friction. 3. a force. correct x How long is the projectile in the air? The acceleration due to gravity is 9.8 m/s2 . Correct answer: 2.44816 s. 064 (part 2 of 2) 10.0 points How far from the bottom of the cliff does the projectile land? 4. pressure. Holt SF 04Rev 10 067 (part 1 of 2) 10.0 points Four forces act on a hot-air balloon, as shown from the side. 562 N Correct answer: 16.5014 m. Tennis Ball 065 10.0 points Despite a very strong wind, a tennis player manages to hit a tennis ball with her racquet so that the ball passes over the net and lands in her opponent’s court. Consider the following forces: 1. A downward force of gravity, 2. A force by the hit, and 3. A force exerted by the air. Which of the above forces is (are) acting on the tennis ball after it has left contact with the racquet and before it touches the ground? 1. 2 and 3. 2. 1 and 2. 3. 1 and 3. correct 4. 1 only. 533 N 394 N 265 N Find the magnitude of the resultant force on the balloon. Correct answer: 327.918 N. 068 (part 2 of 2) 10.0 points Find the direction of the resultant force (measured from the 533 N force, with up positive). Correct answer: 64.9198◦ . Holt SF 04Rev 11 Version 001 – gen physics first semester practice final – gleue – (315192) 069 (part 1 of 2) 10.0 points Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 325 N to the right. If they pull in opposite directions, the raft experiences a net external force of 182 N to the left. Draw a free body diagram for each situation and find the magnitude of the larger of the two individual forces. Correct answer: 253.5 N. 070 (part 2 of 2) 10.0 points What is the magnitude of the smaller of the individual forces? 12 1. Your weight is independent of your mass. 2. Your weight increases. correct 3. Your weight decreases. Mass and Weight 076 (part 1 of 2) 10.0 points A person weighs 55.4 lb. The acceleration of gravity is 9.8 m/s2 . Determine her weight in newtons. Correct answer: 246.419 N. 077 (part 2 of 2) 10.0 points Determine her mass in kilograms. Correct answer: 71.5 N. Correct answer: 25.1448 kg. Hewitt CP9 04 E15 071 (part 1 of 4) 10.0 points 1 Gravity on the surface of the moon is only 6 as strong as gravity on the Earth. What is the weight of a 20 kg object on the Earth? The acceleration of gravity is 10 m/s2 . Correct answer: 200 N. 072 (part 2 of 4) 10.0 points What is the weight on the moon? Correct answer: 33.3333 N. 073 (part 3 of 4) 10.0 points What is the mass on the earth? Correct answer: 20 kg. 074 (part 4 of 4) 10.0 points What is the mass on the moon? Correct answer: 20 kg. Hewitt CP9 04 E17 075 10.0 points What happens to your weight when your mass increases? Holt SF 04Rev 50 078 10.0 points A 4.6 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.81 m/s2 . If the upward acceleration of the bucket is 2.0 m/s2 , find the force exerted by the rope on the bucket of water. Correct answer: 54.326 N. Force on a Coasting Car 079 10.0 points A 1297.3 kg car is traveling at 25.7 m/s when the driver takes his foot off the gas pedal. It takes 5 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Correct answer: 1478.92 N. Hewitt CP9 04 P07 080 10.0 points A firefighter of mass 69 kg slides down a vertical pole with an acceleration of 3 m/s2 . The acceleration of gravity is 10 m/s2 . What is the friction force that acts on him? Correct answer: 483 N. Version 001 – gen physics first semester practice final – gleue – (315192) Holt SF 04B 05 081 10.0 points A soccer ball kicked with a force of 13.4 N accelerates at 7.9 m/s2 to the right. What is the mass of the ball? Correct answer: 1.6962 kg. Net Force 082 (part 1 of 2) 10.0 points A book weighing 22 N is placed on a table. How much support force does a table exert on the book? 13 2. the VW 3. Unable to determine 4. They experienced the same magnitude of force. correct 088 (part 2 of 2) 10.0 points Which bug experienced the greatest acceleration? 1. the insect correct Correct answer: 22 N. 2. Their acceleration is same. 083 (part 2 of 2) 10.0 points What is the net force on the book in this case? 3. Unable to determine. 4. the VW Correct answer: 0 N. Net Forces 02 084 (part 1 of 3) 10.0 points A 48.4 N object is in free fall. What is the magnitude of the net force which acts on the object? Correct answer: 48.4 N. 085 (part 2 of 3) 10.0 points What is the magnitude of the net force when the object encounters 17.4 N of air resistance? Hewitt CP9 02 E29 089 10.0 points As you stand on a floor, the floor exerts an upward force on you. Why are you not moved upward by this force? 1. The upward force is equal to your weight and the two forces cancel each other. correct 2. None of these 3. The upward force is negligible. Correct answer: 31 N. 086 (part 3 of 3) 10.0 points What is the magnitude of the net force when it falls fast enough to encounter an air resistance of 48.4 N? 4. The upward force is greater than your weight, but air pressure pushes you down. Without the air, you would be lifted up. 5. The upward force is less than your weight, so you do not move up. Correct answer: 0 N. Conceptual 04 08 087 (part 1 of 2) 10.0 points A fast-moving VW Beetle traveling at 50 mph hit a mosquito hovering at rest above the road. Which bug experienced the largest force? 1. the insect Reaction Force 04 090 10.0 points You hit someone with a force of 195 N. How much force is exerted on you? Correct answer: 195 N. Conceptual 04 Q13 Version 001 – gen physics first semester practice final – gleue – (315192) 091 (part 1 of 2) 10.0 points Four forces act on an object. is exerted in each strand? Correct answer: 27 N. F1 F3 14 F4 F2 If the object is accelerating to the right, compare the forces. Constant Velocity 095 (part 1 of 2) 10.0 points The force of friction acting on a sliding crate is 117 N. How much force must be applied to maintain a constant velocity? Correct answer: 117 N. 1. F1 = F2 , F3 > F4 096 (part 2 of 2) 10.0 points What will be the net force acting on the crate? 2. F1 < F2 , F3 < F4 Correct answer: 0 N. 3. F1 = F2 , F3 < F4 correct Conceptual forces 03 short 097 10.0 points 4. F1 > F2 , F3 < F4 Consider a book that remains at rest on an incline. B oo k 5. F1 = F2 , F3 = F4 092 (part 2 of 2) 10.0 points If the object is accelerating upward and to the right, compare F1 to F2 and F3 to F4 . 1. F1 = F2 , F3 > F4 2. F1 = F2 , F3 = F4 3. F1 > F2 , F3 < F4 correct 4. F1 < F2 , F3 < F4 5. F1 = F2 , F3 < F4 Bag of Nails 093 (part 1 of 2) 10.0 points When a 135 N bag of nails hangs motionless from a single vertical strand of rope, how much tension is exerted in the strand? Correct answer: 135 N. 094 (part 2 of 2) 10.0 points How much tension if the bag is supported by 5 vertical strands? That is, how much tension The following figures show several attempts at drawing free-body diagrams for the book. Which figure has the correct directions for each force? The magnitudes of the forces are not necessarily drawn to scale. normal 1. friction gravitational Version 001 – gen physics first semester practice final – gleue – (315192) 2. Hewitt CP9 04 E37 098 10.0 points A parachutist, after opening the chute, finds herself gently floating downward, no longer gaining speed. She feels the upward pull of the harness, while gravity pulls her down. How much is the pull of the harness? normal gravitational normal 3. 15 1. Equal to the gravity correct 2. Greater than the gravity gravitational 3. Half of the gravity 4. friction 4. Smaller than the gravity normal 5. All are wrong. gravitational 5. friction gravitational 6. normal friction gravitational friction 7. gravitational normal 8. friction gravitational correct Conceptual 05 Q19 099 10.0 points In StarT rek and other science fiction sagas, you often encounter a fictional device called a tractor beam, capable of pulling objects into the starship. Suppose that an object is falling under the influence of gravity and drag. In addition, imagine that a tractor beam on the ground is pulling the object down. If there is a limit to the force the tractor beam can exert, will the object still attain a terminal velocity? 1. No; it will escape from the gravity of the Earth. 2. Yes; the terminal velocity would occur when the air drag equals gravity plus the force of the tractor beam. correct 3. No; the object will continue to speed up as it falls. Forces 06 100 10.0 points Isaac Newton developed how many laws that describe all states of motion? 1. four Version 001 – gen physics first semester practice final – gleue – (315192) 2. three correct 3. two 4. one 16