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An attacker at the base of a castle wall 3.85 m high throws a rock straight...

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Question

Physics

An attacker at the base of a castle wall 3.85 m high throws arock straight up with speed 8.00 m/s from a height of 1.50 m abovethe ground. (a) Will the rock reach the top of the wall?

Yes No    


(b) If so, what is its speed at the top? If not, what initial speedmust it have to reach the top?
m/s

(c) Find the change in speed of a rock thrown straight down fromthe top of the wall at an initial speed of 8.00 m/s and movingbetween the same two points.
m/s

(d) Does the change in speed of the downward-moving rock agree withthe magnitude of the speed change of the rock moving upward betweenthe same elevations?

Yes No    


(e) Explain physically why it does or does not agree.

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