A puck of mass 0.40 kg approaches a second, identical puck that is stationary on

Question

A puck of mass 0.40 kg approaches a second, identical puck that is stationary on frictionless ice. The initial speed of the moving puck is 4.0 m/s. After the collision, one puck leaves with a speed v1 at 30

A puck of mass 0.40 kg approaches a second, identical puck that is stationary on frictionless ice. The initial speed of the moving puck is 4.0 m/s. After the collision, one puck leaves with a speed v1 at 30 degree to the original line of motion. The second puck leaves with speed v2 at 60 degree . Calculate v1 and v2. Was the collision elastic?

Explanation / Answer

a)v1=3.46m/s v2=2m/s b)yes collision is elastic

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