Questions
The ceiling of a hall is 40 m high. For maximum horizontal distance, the angle at which the ball may be thrown with a speed of 56 ms-1 without hitting the ceiling of the hall is
detailed solution
Correct option is B
h=u2sin2θ2g=(56)2sin2θ19.6sin2θ=40×19.6(56)2=14sinθ=12 or θ=30∘Talk to our academic expert!
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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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