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From the top of a building 80 m high, a ...

From the top of a building `80 m `high, a ball is thrown horizontally which hits the ground at a distance.The line joining the top of the building to the point where it hits the ground makes an angle of `45^(@)` with the ground. Initial velocity of projection of the ball is `(g=10 m//s^(2))`

A

10 m/s

B

15 m/s

C

20 m/s

D

30 m/s

Text Solution

Verified by Experts

The correct Answer is:
C
`omega =(v)/(r ),`
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