Jai is standing on the top of a building of height 25 m he wants to throw his gun to Veeru who stands on top of another building of height 20 m at distance 15 m from first building. For which horizontal speed of projectile, it is possible?

Options

A. `5ms^(-1)`
B. `10ms^(-1)`
C. `15ms^(-1)`
D. `20ms^(-1)`

Answer

C

Explanation

`t=sqrt((2xx5)/10)=1ms^(-1)`
Speed =`15/1=15ms^(-1)`