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A particle P is projected with speed 20 ...

A particle `P` is projected with speed `20 m//s` at angle `37^(@)` from horizontal as shown in figure, At the some instant `Q` starts from same point and moves with uniform acceleration towards right. Path of the particle `P` w.r.t. `Q` is straight line Acceleration of `Q` is :
.

A

`40 m//s`

B

`20 m//s`

C

`(20)/(3) m//s`

D

`(40)/(3) m//s`

Text Solution

Verified by Experts

The correct Answer is:
D
Acceleration of P w.r.t. W must be opposite velocity of P
`vec(a)_(P//Q)=-10 hat(j)-a hat(i) rArr tan 37^(@) = (10)/(a)`

`(3)/(4) = (10)/(a) rArr (40)/(3) m//s`
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