An attacker at the base of castle well 3.65m high attacks a rock straight up wit

Question

An attacker at the base of castle well 3.65m high attacks a rock straight up with speed 7.40m/s at a height of 1.55m above the ground.

a)will the rock reach the top of the wall?


b)If so,what is the rocks speed at the top of the wall?If not, what initial speed must the rock have to reach the top?

c)Find the change in the speed pf the rock thrown straight down from the top of the wall at an initial speed of 7.4m/s and moving between the same tho points.

d)does the change in the speed of the downward moveing rock agree with the speed change of the rock moveing upward between the elevations? Explain why or why not?

Explanation / Answer

Telescope magnification is given by a ratio of the image size produced on the retina when looking through a telescope, versus retinal image size with the naked eye.

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