When a bomb explodes during projectile motion | vedclass

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(A) The motion of the centre of mass of a system is governed by the equation $F_{ext} = M a_{cm}$,where $F_{ext}$ is the net external force acting on

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Internal forces

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(A) The motion of the centre of mass of a system is governed by the equation $F_{ext} = M a_{cm}$,where $F_{ext}$ is the net external force acting on the system and $M$ is the total mass of the system.Internal forces are forces that particles within the system exert on each other. According to Newton's third law,these forces occur in equal and opposite pairs,so their vector sum is always zero.Therefore,internal forces do not affect the acceleration or the motion of the centre of mass of the system.In the case of an exploding bomb,the explosion is caused by internal chemical forces. These forces do not change the trajectory of the centre of mass,which continues to follow the original parabolic path determined by gravity.

When a bomb explodes during projectile motion,which forces do not contribute to the motion of the centre of mass?

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