The conversation between human and AI assistant.
A ball is thrown vertically upward with an initial speed of 15 m/s from 80 m above the ground. Assume free fall conditions. (a) What is the max height? (b) Determine the magnitude of the velocity at 40 m above ground. (c) At what speed does the ball strike the ground?
Interesting. And finally, for part (c), what's the speed at which the ball strikes the ground?
Using the equations of motion and considering that the ball starts from rest at the maximum height, we can calculate that the speed at which the ball strikes the ground is 38.64 m/s.