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