1.

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`

Answer» Correct Answer - C
Horizontal component of velocity remains uncanged.
Hence, `v cos phi = u cos theta`
`:. v = u cos theta sec phi`


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