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Assertion : In projectile motion if part...

Assertion : In projectile motion if particle is projected with speed u, then speed of particle at height h would be `(sqrt (u^2 - 2gh)).`
Reason : If particle is projected with vertical component of velocity `u_y` . Then vertical component at the height h would be `+- (sqrt (u_(y)^2) - 2gh).`

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false, but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
B
`v_x = u_x`
`v_y = +- (sqrt(u_(y)^2) -2gh)`
and `v=(sqrt(v_(x)^2) +v_(y)^2)`
and `u^2 = u_(x)^2 + u_(y)^2` .
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