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At what angle with the horizontal should...

At what angle with the horizontal should a ball be thrown so that the range `R` is related to the time of flight as `R = 5 T^2` ? `(Take g = 10 ms6-2)`.

A

`30^@`

B

`45^@`

C

`60^@`

D

`90^@`

Text Solution

Verified by Experts

The correct Answer is:
B
`R/T^(2)=g (sin 2theta)/(4 sin^(2) theta)=g/2 cot theta=5 cot theta" Given "R/T^(2)=5," hence "5=5 cot theta or theta=45^(@)`
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