A ball is thrown vertically upward with an initial speed of 15 m/s from 80 m above the ground . Assume free fall conditions . -LRB- a -RRB- What is the max height ? -LRB- b -RRB- Determine the magnitude of the velocity at 40 m above ground . -LRB- c -RRB- At what speed does the ball strike the ground ?
A 2 kg ball is dropped from 25 m up . How fast is it going 5 meter above the ground given that there is no air friction ?