A 0.495-kg hockey puck, moving east with a speed of 4.50 m/s , has a head-on collision with a 0.720-kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed (magnitude of the velocity) of each object after the collision?

a)  

b)  

Explanation:

From the question we are told that:

Hockey puck Mass

Hockey puck Speed

Puck Mass

Assuming

Initial speed of Puck

Generally the equation for Speed of First Puck is mathematically given by

Generally the equation for Speed of Second Puck is mathematically given by

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explanation: