A 10-g block slides with a velocity of 21 cm/s on a smooth level surface and makes a head-on collision with a 25 g block moving

Question

A 10-g block slides with a velocity of 21 cm/s on a smooth level surface and makes a head-on collision with a 25 g block moving in the opposite direction with a velocity of 8 cm/s. If the collision is perfectly elastic, what is the velocity of the 25-g block after the collision?

Kunduz · Accepted Answer

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