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Two bodies are projected from ground wit...

Two bodies are projected from ground with equal speeds 20 m/sec from the same position in same vertical plane to have equal range but at different angle above the horizontal. If one of the angle is 30° the sum of their maximum heights is (assume `g = 10m//s^2`)

A

400 m

B

20 m

C

30 m

D

40 m

Text Solution

Verified by Experts

The correct Answer is:
B
`H_(1) + H_(2) u^(2)/(2g)[sin^(2) 30^(@) + sin^(2) 60^(@)]`
`= 20^(2)(2 xx 10)[1/4 + 3/4] = 20 m`
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