Purpose In this homework activity you will practice using your developing ideas about how the motion of an object is related to the force acting on it. Initial Ideas Imagine that you see your friend coasting toward you on his skateboard along the level sidewalk. (How he started moving is not a concern here.) • From the moment you first see him, it takes 4 seconds for him to reach you. • As he reaches you, you begin to push him in the same direction as his motion, with a constant-strength push. You continue to push in this way, moving with him for 4 seconds, and then you stop pushing. • Your friend continues to move, coasting in the same direction, for an additional 4 seconds. ill What do you think the motion of your friend would be like (speeding up, slowing down, or constant speed) during each of the 4-second periods described above? Would they all be the same or would they be different? Explain your reasoning. (Note: ASsume that the skateboard is well lubricated, so that the effects of friction between the parts of the skateboard and between the skateboard and ground can be ignored.)

Purpose In this homework activity you will practice using your developing ideas about how the motion of an object is related to the force acting on it. Initial Ideas Imagine that you see your friend coasting toward you on his skateboard along the level sidewalk. (How he started moving is not a concern here.) • From the moment you first see him, it takes 4 seconds for him to reach you. • As he reaches you, you begin to push him in the same direction as his motion, with a constant-strength push. You continue to push in this way, moving with him for 4 seconds, and then you stop pushing. • Your friend continues to move, coasting in the same direction, for an additional 4 seconds. ill What do you think the motion of your friend would be like (speeding up, slowing down, or constant speed) during each of the 4-second periods described above? Would they all be the same or would they be different? Explain your reasoning. (Note: ASsume that the skateboard is well lubricated, so that the effects of friction between the parts of the skateboard and between the skateboard and ground can be ignored.)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 63P: The contestant now pulls the block of ice with a rope over his shoulder at the same angle above the...

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