1.

If the relation between range R and time of flight T is given by R = 5 T2 , the angle of throw of the projectile is :

Answer»

`45^@`
`15^@`
`60^@`
`90^@`

Solution :Here `(2v^(2)SINTHETACOSTHETA)/G=(5xx4v^(2)SIN^(2)theta)/g^(2)`
or `tantheta=1` if `g=10ms^(-2) or theta=45^@`


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