<p> Review for Test</p><p>1. A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts </p><p> down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, </p><p> its speed is 22 m/s. What is its average acceleration?</p><p>2. A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration ?</p><p>3. A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s </p><p> average acceleration?</p><p>4. A car accelerates at a rate of 3.0 m/s2. If its original speed is 8.0 m/s, how many </p><p> seconds will it take the car to reach a final speed of 25.0 m/s?</p><p>5. A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0 m/s2. If </p><p> the cart has a beginning speed of 2.0 m/s, what is its final speed?</p><p>6. A vehicle travels 2345 m in 315 s toward the evening sun. What is its velocity?</p><p>7. What distance will a car traveling 65 km/hr travel in 3.0 hrs?</p><p>8. How much force is required to accelerate a 2 kg mass at 3 m/s2? </p><p>9. Given a force of 100 N and an acceleration of 10 m/s2, what is the mass? </p><p>10. What is the acceleration of a 24 kg mass pushed by a 6 N force? </p><p>11. How much force is required to accelerate an 8 kg mass at 5 m/s2? </p><p>12. What is the acceleration of an 18 kg mass pushed by a 9 N force? </p><p>13. How much force is required to accelerate a 50 kg mass at 2 m/s2? </p><p>14. Given a force of 56 N and an acceleration of 7 m/s2, what is the mass? </p><p>15. What is the weight of a 7.0-kilogram bowling ball on Earth’s surface?</p><p>16. What is the mass of a 55N man on the Earth’s surface? 17. What is the weight of a baby carriage with a mass of 2kg?</p><p>18. 100 grams of a liquid completely fill a 200 mL bottle. What is the density of the </p><p> liquid?</p><p>19. A solution has a density of 1.50 g/mL. How many grams are needed to obtain </p><p>10.0 mL of solution?</p><p>20. If a block of copper measures 2.00 cm x 4.00 cm x 5.00 cm and weighs 356 </p><p> grams, what is its density?</p><p>21. A piece of silver has a mass of 2800 grams and occupies a volume of 266 cm3. </p><p>What is the density of silver?</p><p>22. A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What </p><p> amount of force acted on the ball?</p><p>23. You push a friend sitting on a swing. She has a mass of 50 kg and accelerates at a </p><p> rate of 4 m/s2. Find the force you exerted. </p><p>24. How much force would it take to push another, larger friend who has a mass of 70</p><p> kg to accelerate at the same rate of 4 m/s2?</p><p>25. A little boy pushes a wagon with his dog in it. The mass of the dog and wagon </p><p> together is 45 kg. The wagon accelerates at 0.85 m/s2. What force is the boy </p><p> pulling with?</p><p>26. A 68 kg runner exerts a force of 59 N. What is the acceleration of the runner?</p><p>27. A stalled car is pushed with a force of 342 N from rest. How far does the car </p><p> travel in 12 seconds is it's mass is 989 kg?</p><p>28. What is the acceleration of a 24 kg mass pushed by an 8 N force? </p><p>29. What is the acceleration of a 24 kg mass pushed by an 8 N force? 30. What is the acceleration of a 7 kg mass pushed by a 3.5 N force? </p><p>31. Which letter shows the ball when it</p><p> has the maximum kinetic energy?</p><p>32.</p><p>Which letter shows the ball when it has the maximum potential energy?</p><p>33. Galileo drops a 5.0 kg cannonball from the Leaning Tower of Pisa, a height of</p><p>12 m. What is the change in the gravitational potential energy of the cannonball </p><p> from the top of the tower to the ground?</p><p>34. A book is sitting on top of a 13m shelf. The book has a potential energy of 47J. </p><p>What is the mass of the book?</p><p>35. There is a 14kg baby carriage with a gravitational potential energy of 45J. What </p><p> is the height of the hill the carriage is on? 36. Candice is sitting on top of a 9m slide. Candice has a mass of 80kg. How much </p><p> gravitational potential energy does Candice have?</p><p>37. A 882kg car has a gravitational potential energy of 1378J. How high is the hill </p><p> the car is sitting on?</p><p>38. Rodger Maris swung a bat which had a mass of 2 Kg at a velocity of 45 m/s.</p><p>How many joules of kinetic energy could he give to a ball?</p><p>39. Barry Bonds swings a bat which has a mass of 1.5 Kg at a velocity of 55 m/s. </p><p>How many joules of kinetic energy could he give to a ball?</p><p>40. An army tank of 2.5 x 104 kg mass has a kinetic energy of 1.25 x 106 J. </p><p>Calculate the speed of the tank.</p><p>41. Determine the kinetic energy of a 300 kg space probe launched from the surface </p><p> of Mars, once it has reached escape velocity of 5.1 km/s.</p><p>42. Calculate the KE of a car, which has a mass of 1000 kg and is moving at the rate </p><p> of 20 m/s. </p><p>43. How much work is done by a crane that lowers 1,000 newtons of material a </p><p> distance of 150 meters?</p><p>44. How much work is done when a 1 kilogram mass is raised a vertical distance of </p><p>1 meter?</p><p>45. A student who weighs 500 newtons climbed the stairs from the first floor to the </p><p> third floor, 15 meters above, in 20 seconds.</p><p> a. How much work did she do?</p><p> b. What was her power? 46. 46. A box is pushed across the floor for a distance of 5 meters with a force </p><p> of 50 newtons in 5 seconds.</p><p> a. How much work is done?</p><p> b. What is the power?</p><p>47. A woman lifts a 300 newton child a distance of 1.5 meters in 0.75 seconds. </p><p>What is her power output in lifting the child?</p><p>48. How much work is done when a 5N force moves a block 4m?</p><p>49. How much force is needed to move a 11kg block 12 m, if 13J of work was used?</p><p>50. How much power does it take to move a 30kg block 12 m in 5s?</p><p>51. What is the mass of a block that is moved 17m in 10s with a power of 2.5J?</p><p>52. How much power does it take to do 500J of work in 10s.</p><p>53. How long does it take for Tiffany to work 347J if she uses a power of 50W?</p><p>54. How much work can be done by a 20W motor in 5s?</p><p>55. How much work can be done by a 33W motor in 23s?</p>