1.

A shell is fired from a canon with a velocity V at an angle θ with the horizontal direction. At thehighest point in its path, it explodes into two pieces of equal masses. One of the pieces retraces itspath to the cannon. The speed of the other piece immediately after the explosion is(A) 3 V cos θ(B) 2V cos θ(C) 5 V cos θ(D) V cos θ2

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