A ball is thrown horizontally from the top of
a building 21.8 m high. The ball strikes the
ground at a point 101 m from the base of the
building.
The acceleration of gravity is 9.8 m/s
2
.
Find the time the ball is in motion.

Question

A ball is thrown horizontally from the top of
a building 21.8 m high. The ball strikes the
ground at a point 101 m from the base of the
building.
The acceleration of gravity is 9.8 m/s
2
.
Find the time the ball is in motion.

michele_laino · Answer

Plesae, you have to apply this formula:
$$h=\frac{ 1 }{ 2 }g t ^{2}$$
and to solve that equation for t, where h=21.8 m and g=9.81 m/sec^2

michele_laino · Answer

Since the situation described in your exercise is:
|dw:1420702780742:dw|