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Final Review Term 1 1) A kilogram is 10-3 grams. 103 grams. 106 grams. 10 grams. 10 meters. .1 meters. .01 meters. 2) A centimeter is 100 meters. 3) A kilometer is greater than a mile. less than a mile. about the size of a football field. 4) All of the following are base units of the SI system except: kilogram. kelvin. meter. pound 5) Convert 0.75 kilometers to meters. 7500 m 750 m 75 m 7.5 m 6) Convert 0.0215 m to mm. 0.215 mm 2.15 mm 21.5 mm 215 mm 7) Add 321.475, 42.500, and 2.25, and round properly. 366 366.22 366.23 366.225 8) Multiply 12.75 times 4.375 and round properly. 55.78125 55.78 55.8 56.0 The number 9452 in scientific notation is 9.452x102 94.52x102 .9452x104 9.452x103 9) The number .0000475 in scientific notation is 4.75x10-6 4.75x10-5 4.75x10-4 10) Which graph represents an object at rest? 4.75x10-3 less than a football field. 11) Which graph represents constant positive acceleration? 12) In this problem "up" is taken to be positive. A ball is thrown straight up in the air, at the very top its velocity is negative. m/s^2 acceleration is zero. its acceleration is 9.8 m/s^2. its acceleration is -9.8 13) In this problem "up" is taken to be positive. A falling object has positive acceleration and positive velocity. acceleration and negative velocity. negative acceleration and negative velocity. positive negative acceleration and positive velocity. 14) A 5 kg (4.9 N) book rests on your desk. Which of the following answers is not correct? The normal force on the book equals its weight because of Newton's First Law. the book equals its weight because of Newton's Second Law. weight because of Newton's Third Law. The normal force on The normal force on the book equals the 15) A 5 kg (4.9 N) book rests on your desk. What is the reaction force to the 4.9 N weight (force) of the book? The 4.9 N normal force from the table on the book. The weight of the earth. The 4.9 N reaction force from the book on the table. A 4.9 N force on the Earth. 16) You stand on a bathroom scale in an elevator accelerating upwards and it reads 200 Newtons. Which of the following is true? You weigh 200 Newtons. 20.4 m/s^2. The scale exert a 200 N force on you. The acceleration of the elevator is None of the above are correct. 17) Money is to wealth as weight is to (the force of) gravity. weight is to mass. mass is to inertia. gravity is to mass. 18) A car pulls on a rope tied to a tree with a force of 1000 Newtons. Which of the following is not true. The rope pulls on the tree with a force of 1000 Newtons. Newtons. The tension in the rope is 2000 Newtons. The tree pulls on the rope with a force of 1000 The tension in the rope is 1000 Newtons. Solve these problems using significant figures. 1) 25miles/hour = _____________ft/sec 2) 10. ft/sec = _____________miles/sec 3) 20.km/hr = _____________m/s 4) 5.908 x 400 = ________________ 5) 3.6 x 444 = ________________ 6) 5.99/ 0.06 = ________________ 7) (3.5060 x 90.0)/33 ________________ 8) 2.3584x5465x246=________________ 9) 3.33/456= ________________ 10) 333/199.8= ________________ 11) 146740/667= ________________ 12) 0.28/56= ________________ Measure the bold line and report the range of uncertainty with units. llllllllllllllllllllllllllllllllllllll 0 1 2 3cm 13) Line is ___________________ 14) A swimmer is swimming across a stretch of water 100.m wide at a constant 5.0m/s. a) How long does it take for the swimmer to cross the river?__________ b) If the current pushes the swimmer downstream at 4m/s, how far down river will the swimmer be when they reach the other side? ___________ 15) A car with a search beacon is stolen from a home. The car is driven 3.0 miles East, 4.0 miles north, 6 miles west and parked. How far from home with the search beacon detect the car?___________ 16) A ball is thrown perfectly horizontally off of the same cliff at 20m/s and lands 2.0s later. (Fill in the table) What is the initial horizontal velocity? What is the horizontal acceleration? What is the final horizontal velocity? Now that the ball is moving horizontally, list here which of the vertical values change? What is the horizontal time? Calculate the horizontal distance that the ball will travel. Horizontal (x direction) Vertical (y direction) a= a= Vi= Vi= Vf= Vf= D= D= T= T=