# PHYSICS

posted by
**RoCu** on
.

A 0.26kg- rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, the rock has a speed of 29m/s.

1)

Assuming that air resistance can be ignored, find the initial speed of the rock

? m/s

2)

Find the greatest height of the rock as measured from the base of the cliff.

? m