Does law of conservation of momentum is possible because it acts when there is no external force applied to it but friction is everywhere which is a external force?
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During projectile motion and where air resistance is negligible, momentum is conserved in the horizontal direction because horizontal forces are zero. Conservation of momentum applies only when the net external force is zero. ( PLEASE MARK ME AS BRAINLIST)
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An isolated system is defined to be one for which the net external force is zero (Fnet = 0). During projectile motion and where air resistance is negligible, momentum is conserved in the horizontal direction because horizontal forces are zero. Conservation of momentum applies only when the net external force is zero.
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