1.

A body is projected at an angle `60^(@)` with the horizontal ground with kinetic energy k. When the velocity makes an angle `30^(@)` with the horizontal, the kinetic energy of the body will be `(k)/(a)`. Find value of a.

Answer» Correct Answer - 4 m/s
`v_(B//C)implies v_(B//G)-v_(C//G)implies(5+2)-3implies +4m//s`


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