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Questions  

The maximum height reached by a projectile is 4 meters. The horizontal range is 12 meters. Velocity of projection , in ms-1 , is (g is acceleration due to gravity) 

a
5g2
b
3g2
c
13g2
d
15g2

detailed solution

Correct option is A

R=12m                   HR=14tanθH=4m                   412=14tanθtanθ=43            sinθ=45H=u2sin2θ2g             H=u21625×2gu2=100×2g16u=5g/2

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Similar Questions

Assertion : When the velocity of projection of a body is made n times, its time of flight becomes n times.

Reason : Range of projectile does not depend on the initial velocity of a body.


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