Questions
A shell is fired from a cannon with a velocity v at an angle with the horizontal direction At the highest point in its path, it explodes into two pieces of equal masses. One of the pieces retraces its path to the cannon. The speed of the other piece immediately after the explosion is
detailed solution
Correct option is A
Applying the law of conservation of momentum, we have(2m)(vcosθ)=−m(vcosθ)+mv2 2vcosθ+vcosθ=v2 v2=3vcosθTalk 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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