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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 cos theta`

B

`v = u cos theta cos phi`

C

`v = u cos theta sec phi`

D

`v = u sec theta cos phi`

Text Solution

Verified by Experts

The correct Answer is:
C
Horizontal component of velocity remains uncanged.
Hence, `v cos phi = u cos theta`
`:. v = u cos theta sec phi`
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