- #1
Hughey85
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A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 30 m high. When it hits the ground at the base of the cliff the rock has a speed of 25 m/s.
(a) Assuming that air resistance can be ignored, find the initial speed of the rock.
(b) Find the greatest height of the rock as measured from the base of the cliff.
I got part (a) to be 6.0 m/s, but do not know how to get part (b). If I know both velocities, what equation should I use to find max height? Thank you!
(a) Assuming that air resistance can be ignored, find the initial speed of the rock.
(b) Find the greatest height of the rock as measured from the base of the cliff.
I got part (a) to be 6.0 m/s, but do not know how to get part (b). If I know both velocities, what equation should I use to find max height? Thank you!