A Puck with a Mass M₁ = 50 G Moving

question 92

Multiple Choice

A puck with a mass m₁ = 50 g moving at 1.0 m/s approaches a stationary puck with a mass m₂ = 100 g on a frictionless air table,and they undergo a sudden two-dimensional elastic collision.After the collision,both pucks have identical speeds,but travel in different directions.What is the angle between the original and final paths of puck with mass m₁?

• A)30°
• B)60°
• C)90°
• D)120°
• E)150°

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