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Transcript
Name ________________________ Block _____ Honors Physics Final Exam Review 1 Chapters 1,2,3,4 1) While driving in Europe you see a sign indicating the speed limit is 30 m/s. About how fast is this in mph? (note: 1 mi = 1.61 km) a) 43 mph b) 55 mph c) 67 mph d) 90 mph traveled after 0.60 h? a) 1.1 km b) 2.5 km c) 0.63 km d) 3.7 km 6) A hiker travels east at 2 km/hr for 2 hr, then east at 3 km/hr for 1 hr. What is the hiker's average velocity for the trip? a) 1.33 km/hr east b) 2.25 km/hr east c) 2.33 km/hr east d) 2.50 km/hr east 3) Convert 6.5 mm to meters using scientific notation. a) 6.5 x 10-6 m b) 6.5 x 10-5 m c) 6.5 x 10-3 m d) 6.5 x 10-2 m 4) If some measurements agree closely with each other but differ widely from the actual value, these measurements are a) neither precise nor accurate. b) accurate but not precise. c) acceptable as a new standard of accuracy. d) precise but not accurate. 5) A dolphin swims 1.85 km/h. How far has the dolphin 7) A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s2. What is the final velocity after 6.0 s? a) 10.0 m/s b) 12 m/s c) 16 m/s d) 17 m/s 8) Based on the graph above, which statement is false? a) the speed of the object is decreasing b) the acceleration of the object is zero c) the displacement of the object is decreasing d) the velocity of the object is negative 11) A race car accelerates from 0 m/s to 30.0 m/s with a displacement of 45.0 m. What is the vehicle's acceleration? a) 2.00 m/s2 b) 5.00 m/s2 c) 10.0 m/s2 d) 15.0 m/s2 12) A sports car accelerates at a constant rate from rest to a speed of 27.8 m/s in 8.00 s. What is the displacement of the sports car in this time interval? a) 55.0 m b) 77.0 m c) 111 m d) 222 m 9) Based on the graph above, which statement is false? a) the acceleration of the object is constant b) the velocity is changing in a positive direction c) the speed of the object is constant d) the object comes to a stop at one or more points on 10)Based on the graph above, which statement is false? a) the object is stationary b) the acceleration of the object is zero c) the displacement of the object is positive d) the speed of the object is constant 13) A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball's path does it experience zero velocity and zero acceleration? a) midway on the way up b) at the top of its trajectory c) the instant before it arrives in the catcher's mitt d) at no point in the ball's path 14) A rock is thrown straight upward with an initial velocity of 19.6 m/s and returns back to the location it was thrown. What is the rock's total time in the air? a) 4.0 s b) 5.0 s c) 8.0 s d) 10 s 15) A cave explorer travels 3.0 m eastward, then 2.5 m northward, and finally 15 m westward. Find the magnitude of the net displacement. a) 12 m b) 5.7 m c) 18 m d) 15 m 19) What are the fundamental units that make up a Newton? a) m/s b) kg·m/s c) kg·m/s2 d) m/s2 20) How much would a 24kg object weigh on Mars, where the force of gravity is 1/3 the force of gravity on Earth? a) 8N b) 29N c) 78N d) 235N 16) What is the vertical velocity of a helicopter traveling at 105km/hr at a 65° angle above the horizon. a) 44.37 km/hr b) 95.16 km/hr c) 105.0 km/hr d) 225.2 km/hr 17) A student's pencil rolls of her desk and lands on the ground 1.90m away. It took 0.78s for the pencil to hit the ground. What is the height of the desk? a) 2.98 m b) 3.83 m c) 2.05 m d) 1.90 m 18) A baseball is hit at an angle of 40° above the horizon with an initial velocity of 50m/s. What is the total time the ball is the ball in the air? a) 3.28s b) 6.56s c) 7.82s d) 10.2s 23) Four forces act of Joe's hot air balloon; 3250N up, 2350N down, 830N right, 1240N left. Find the resultant magnitude and direction above the horizon a) 1053N at 30.5º b) 1053N at 24.5º c) 989N at 24.5º d) 989N at 65.6º 24) A 75kg object is pushed across a floor with an applied force of 50N. If a constant frictional force restricts the motion and the object still accelerates at 0.25 m/s2, find the coefficient of friction. a) 0.04 b) 0.06 c) 0.10 d) 0.12 25) A 23N force accelerates an object at 5.2m/s2. What is the mass of the object? a) 0.23 kg b) 119.6 kg c) 3.2 kg d) 4.4 kg 26) A 20kg crate initially at rest on a horizontal floor requires a 60N horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor. a) 0.11 b) 0.31 c) 0.74 d) 0.25 28) A 55kg box is pulled across the floor by a 92N force applied at a 41° angle to the ground. Find the acceleration of the box. a) 0.79 m/s2 b) 1.10 m/s2 c) 1.26 m/s2 d) 1.67 m/s2 29) A 12kg block slides down a 42° incline where the coefficient of friction is 0.055. Find the magnitude of the normal force. a) 58.9 N b) 78.8 N c) 87.5 N d) 118 N 27) A 10kg object weighs 87N on a scale in an elevator. Find the magnitude of the acceleration of the elevator. a) 1.11 m/s2 b) 8.87 m/s2 c) 9.81 m/s2 d) 11.1 m/s2 30) A 15kg block slides down a 33° incline without friction. Find the acceleration of the block. a) 5.33 m/s2 b) 8.22 m/s2 c) 80.1 m/s2 d) 147 m/s2