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The range of a projectile fired at an an...

The range of a projectile fired at an angle of `15^@` is 50 m. If it is fired with the same speed at an angle of `45^@` its range will be

A

` 60 m`

B

` 71 m`

C

` 100 m`

D

` 141 m`

Text Solution

Verified by Experts

The correct Answer is:
C
` 50 = (u^2 sin 2 xx 15^2)/g or ` u^2 /g = (50) /(sin 30^@) = (50)/(1//2) = 100`
`R = 9u^2 sin 2 xx 45^2)/g = u^2/g = 100 m`.
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