From the top of a building 19.6 m high

Asked by admin @ 20/08/2021 in Physics viewed by 315 People

From the top of a building 19.6 m high, a ball is projected horizontally. After how long does it strike the ground? If the line joining the point of projection to the point where it hits the ground makes an anglle 45 degree with the horizontal , What is the initial velocity of the ball?

Answered by admin @ 20/08/2021

T = (2h/g)

= (2 x 19.6 m/(9.8 m/s2))

= 2 s.

U = 19.6/2

= 9.8 m/s^2

Hope this helps!

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