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A 0.450-kg ice puck, moving east with a speed of 5.86 m/s , has a head-on collision with a 0.990-kg puck initially at rest. Assume that the collision is perfectly elastic. What is the **speed** of the 0.990-kg puck after the collision?

What is the **speed** of the 0.990-kgkg puck after the collision?

Mass of small puck (m1)= 0.45 kg

initial velocity (u)= 5.86 m/s

mass of second puck (M)= 0.99 kg

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