v31

A

`10 ms^(-2)`

B

`100 ms^(-2)`

C

`130/15 ms^(-2)`

D

`140/15 ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Let height of point P above the ground be h.
`u cos 53^(@)t + h = 1//2at^(2)`.......... (i)
`(u sin 53^(@) -"gt")/(u cos 53^(@) -at) =1`.......... (ii)
`h = 4 sin 53^(@) t - 1/2 "gt"^(2)`........... (iii)
On solving above equations, we get
`a = 130/15 ms^(-2)`
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