STATEMENT-1: A particle si projected at an angle `theta ( lt 90)` to horizontal, with a velcotiy `u`. When particle strikes the ground its speed is again `u`.
STATEMENT-2: Velocity along horizontal direction remains same but velocity along vertical direction is changed. When particle strikes the ground, magnitude of final vertical velocity is equal to magnitude of initla vertical velocity.

Options

A. Statement -1 is True, Statement-2 is Ture, Statement-2 is a correct explanantion for Statement-1.
B. Statement-1 is Ture, Statement-2 is Ture, Statement-2 is Not a correct explanantion for Statement-1.
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Answer

A

Explanation

`{:(U_(x) =0 a_(x) =0,,rArr,V_(x)=U_(x) +a_(x)T = U_(x),),(U_(y)=usin theta, a_(y) =- g,,rArr,V_(y) = u sin theta - g t,):}`
`= u sin theta - g.(2u sin theta)/(g), V_(y) =- u sin theta. `