A 30-Kg Object Moving 8

question 66

Multiple Choice

A 3.0-kg object moving 8.0 m/s in the positive x direction has a one-dimensional elastic collision with an object (mass = M) initially at rest. After the collision the object of unknown mass has a velocity of 6.0 m/s in the positive x direction. What is M?

• A) 7.5 kg
• B) 5.0 kg
• C) 6.0 kg
• D) 4.2 kg
• E) 8.0 kg

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