PHYSICAL SCIENCE (LCPO)
12th Edition
ISBN: 9781265774660
Author: Tillery
Publisher: MCG
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Chapter 2, Problem 38AC
You are outside a store, moving a loaded grocery cart down the street on a very steep hill. It is difficult, but you are able to pull back on the handle and keep the cart moving down the street in a straight line and at a constant speed. For this situation, the forces on the cart are.
a. unbalanced, in the direction of the movement.
b. balanced, with a net force of zero.
c. equal to the force of gravity acting on the cart.
d. greater than the frictional forces opposing the motion of the cart.
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Chapter 2 Solutions
PHYSICAL SCIENCE (LCPO)
Ch. 2 - 1. A straight-line distance covered during a...Ch. 2 - 2. How fast an object is moving in a particular...Ch. 2 -
3. Acceleration occurs when an object undergoes...Ch. 2 - Prob. 4ACCh. 2 -
5. A car moving at 60 km/h comes to a stop in 10...Ch. 2 -
6. According to Galileo, an object moving without...Ch. 2 -
7. In free fall, an object is seen to have a (an)...Ch. 2 -
8. A tennis ball is hit, causing it to move...Ch. 2 -
9. A quantity of 5 m/s2 is a measure of...Ch. 2 - 10. An automobile has how many different devices...
Ch. 2 - 11. Ignoring air resistance, an object falling...Ch. 2 - 12. Ignoring air resistance, an object falling...Ch. 2 - 13. Two objects are released from the same height...Ch. 2 - 14. A ball rolling across the floor slows to a...Ch. 2 - 15. The basic difference between instantaneous and...Ch. 2 - 16. Does any change in the motion of an object...Ch. 2 - 17. A measure of how fast your speed is changing...Ch. 2 - 18. Considering the forces on the system of you...Ch. 2 - 19. Newton’s first law of motion describes
a. the...Ch. 2 - 20. You are standing freely on a motionless...Ch. 2 - 21. Mass is measured in kilograms, which is a...Ch. 2 - 22. Which metric unit is used to express a measure...Ch. 2 - 23. Newton’s third law of motion states that...Ch. 2 - 24. If you double the unbalanced force on an...Ch. 2 - 25. If you double the mass of a cart while it is...Ch. 2 - 26. Doubling the distance between the center of an...Ch. 2 - 27. If a ball swinging in a circle on a string is...Ch. 2 - 28. A ball is swinging in a circle on a string...Ch. 2 - 29. Suppose the mass of a moving scooter is...Ch. 2 - 30. Two identical moons are moving in identical...Ch. 2 - 31. Which undergoes a greater change of momentum,...Ch. 2 - Prob. 32ACCh. 2 - 33. An astronaut living on a space station that is...Ch. 2 - Prob. 34ACCh. 2 -
35. You are at rest with a grocery cart at the...Ch. 2 -
36. Once again you are at rest with a grocery...Ch. 2 -
37. You are moving a grocery cart at a constant...Ch. 2 -
38. You are outside a store, moving a loaded...Ch. 2 -
39. Neglecting air resistance, a ball in free...Ch. 2 -
40. From a bridge, a ball is thrown straight up...Ch. 2 -
41. After being released, a ball thrown straight...Ch. 2 -
42. A gun is aimed horizontally at the center of...Ch. 2 -
43. According to the third law of motion, which...Ch. 2 -
44. A small sports car and a large SUV collide...Ch. 2 -
45. Again consider the small sports car and large...Ch. 2 -
46. An orbiting satellite is moved from 10,000 to...Ch. 2 -
47. Newton’s law of gravitation considers the...Ch. 2 - 1. An insect inside a bus flies from the back...Ch. 2 - 2. Disregarding air friction, describe all the...Ch. 2 -
3. Can gravity act in a vacuum? Explain.
Ch. 2 -
4. Is it possible for a small car to have the...Ch. 2 -
5. Without friction, what net force is needed to...Ch. 2 -
6. How can there ever be an unbalanced force on...Ch. 2 -
7. Why should you bend your knees as you hit the...Ch. 2 -
8. Is it possible for your weight to change while...Ch. 2 - Prob. 9QFTCh. 2 - 10. Suppose you are standing on the ice of a...Ch. 2 - 11. A rocket blasts off from a platform on a space...Ch. 2 - 12. An astronaut leaves a spaceship that is moving...Ch. 2 - 1. What are the significant similarities and...Ch. 2 - 2. What are the significant similarities and...Ch. 2 -
3. Compare your beliefs and your own reasoning...Ch. 2 -
5. Why is it that your weight can change by...Ch. 2 -
6. Assess the reasoning that Newton's first law...Ch. 2 - Prob. 6FFACh. 2 - Prob. 1IICh. 2 - Prob. 1PEACh. 2 - Prob. 2PEACh. 2 - Prob. 3PEACh. 2 - Prob. 4PEACh. 2 - Prob. 5PEACh. 2 - Prob. 6PEACh. 2 - Prob. 7PEACh. 2 - Prob. 8PEACh. 2 - Prob. 9PEACh. 2 - Prob. 10PEACh. 2 - Prob. 11PEACh. 2 - Prob. 12PEACh. 2 - Prob. 13PEACh. 2 - Prob. 14PEACh. 2 - Prob. 15PEACh. 2 - Prob. 16PEACh. 2 - Prob. 17PEACh. 2 - Prob. 18PEACh. 2 - What is the resulting acceleration when an...Ch. 2 - What is the momentum of a 100 kg football player...Ch. 2 - A car weighing 13,720 N is speeding down a highway...Ch. 2 - A 15 g bullet is fired with a velocity of 200 m/s...Ch. 2 - Prob. 23PEACh. 2 - (a) What is the weight of a 1.25 kg book? (b) What...Ch. 2 - Prob. 25PEACh. 2 - Prob. 26PEACh. 2 - Prob. 27PEACh. 2 - Prob. 28PEACh. 2 - Prob. 29PEACh. 2 - Prob. 30PEACh. 2 - Prob. 31PEACh. 2 - 1. What was the average speed in km/h of a car...Ch. 2 - 2. What was the average speed in km/h of a boat...Ch. 2 -
3. How much would an 80.0 kg person weigh (a) on...Ch. 2 -
4. What force is needed to give a 6,000 kg truck...Ch. 2 -
5. What is the resulting acceleration when a 300...Ch. 2 -
6. A boat moves 15.0 km across a lake in 30.0...Ch. 2 -
7. If the Sun is a distance of 1.5 108 km from...Ch. 2 -
8. How many meters away is a cliff if an echo is...Ch. 2 -
9. A car has an average speed of 80.0 km/h for 1...Ch. 2 - 10. What is the acceleration of a car that moves...Ch. 2 - 11. How much time is needed for a car to...Ch. 2 - 12. A rocket moves through outer space at 11,000...Ch. 2 - 13. Sound travels at 348 m/s in the warm air...Ch. 2 - 14. How many hours are required for a radio signal...Ch. 2 - 15. A rifle is fired straight up, and the bullet...Ch. 2 - 16. A rock thrown straight up climbs for 2.50 s,...Ch. 2 - 17. An object is observed to fall from a bridge,...Ch. 2 - 18. A ball dropped from a window strikes the...Ch. 2 - 19. Find the resulting acceleration from a 300 N...Ch. 2 - 20. What is the momentum of a 30.0 kg shell fired...Ch. 2 - 21. What is the momentum of a 39.2 N bowling ball...Ch. 2 - 22. A 30.0 kg shell is fired from a 2,000 kg...Ch. 2 - 23. An 80.0 kg man is standing on a frictionless...Ch. 2 - 24. (a) What is the weight of a 5.00 kg backpack?...Ch. 2 - 25. What net force is required to accelerate a...Ch. 2 - 26. What forward force must the ground apply to...Ch. 2 - 27. A 1,000.0 kg car accelerates uniformly to...Ch. 2 - 28. A net force of 3,000.0 N accelerates a car...Ch. 2 - 29. How much does a 60.0 kg person weigh?
Ch. 2 - 30. What tension must a 50.0 cm length of string...Ch. 2 - 31. A 200.0 kg astronaut and equipment move with a...
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