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Engine of a train that is moving with un...

Engine of a train that is moving with unifrom acceleration passes a pole with speed `u` while the last compartment passes the pole with speed 'v'. The middle point of the train passes the given pole with speed:

A

`3 m//s`

B

`15 m//s`

C

`30 m//s`

D

`300 m//s`

Text Solution

Verified by Experts

The correct Answer is:
C
Projection angle is `45^(@)` & `V_(y)=21 m//s`, projection spped is `V_(0) sin 45^(@)=21 rArr V_(0)=21xxsqrt(2)=30 m//s`
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