A rocket following a parabolic path through the air suddenly explodes into many pieces. What can you say about the motion of this system of pieces?
We have to determine whether there would be change in motion of system of pieces resulting due to exploding of rocket.
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Center of mass of a body is an imaginary point at which whole mass of the body is supposed to be concentrated.
We consider that the net force acts on the centre of mass of body, insteads of considering that it acts on each and every point on the body for simpler calculation.