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A particle is thrown with a speed u at a...

A particle is thrown with a speed u at an angle ` theta` with the horizontal. When the particle makes an angle `phi` with the horizontal. Its speed changes to v :

A

`v = u costheta`

B

`v = u costhetacos phi`

C

`v = u costhetasec phi`

D

`v = u sectheta cos phi`

Text Solution

Verified by Experts

The correct Answer is:
C
The horizontal component of the velocity remains constant. Hence ,
`u cos theta = v cos theta " or " v = u cos theta sec phi`
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