Problem 3: Using constant acceleration equations for motion in free fall A rock is thrown straight up from a 30 m cliff above the ground level with a speed of 20 On the way down it misses the cliff and continues all the way down to the ground level. The trajectory of the rock is shown by the black dashed line in the figure. The free-fall acceleration has a magnitude of 10 and is directed downwards. E. What is the net displacement of the rock for its entire trajectory? Assume that the positive y-direction points up, as shown in the figure. F. Find the total time the rock is in the air. Express your answer in seconds. G. Find the rock's velocity in the y-direction v, exactly 5 seconds after it is thrown up. Use the usual sign convention (positive for up, negative for down). Express your answer in m/s.

Problem 3: Using constant acceleration equations for motion in free fall A rock is thrown straight up from a 30 m cliff above the ground level with a speed of 20 On the way down it misses the cliff and continues all the way down to the ground level. The trajectory of the rock is shown by the black dashed line in the figure. The free-fall acceleration has a magnitude of 10 and is directed downwards. E. What is the net displacement of the rock for its entire trajectory? Assume that the positive y-direction points up, as shown in the figure. F. Find the total time the rock is in the air. Express your answer in seconds. G. Find the rock's velocity in the y-direction v, exactly 5 seconds after it is thrown up. Use the usual sign convention (positive for up, negative for down). Express your answer in m/s.

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Description: Problem 3: Using constant acceleration equations for motion in free fallA rock is thrown straight up from a 30 m cliff above the ground levelwith a speed of 20. On the way down it misses the cliff andcontinues all the way down to the ground level. T

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter3: Vectors

Section: Chapter Questions

Problem 36PQ

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