דו 1. A ball is thrown horizontally from the roof of a tall building 25 in high

a) When will it strikes to the ground?

b) At what speed will it strike the ground?​

Here as the ball is falling under the influence of gravity, assuming gravity is 10 m/s2

Acceleration is 10.

Initial speed u is 0

Time taken is x

And distance travelled is 25

S= 1/2 at 2

Time taken by the ball to reach the ground is 5sec

For speed,