A 30-Kg Mass Moving in the Positive X Direction with a a Speed

question 4

Multiple Choice

A 3.0-kg mass moving in the positive x direction with a speed of 10 m/s collides with a 6.0-kg mass initially at rest.After the collision,the speed of the 3.0-kg mass is 8.0 m/s,and its velocity vector makes an angle of 35 $\degree$ with the positive x axis.What is the magnitude of the velocity of the 6.0-kg mass after the collision?

• A)2.2 m/s
• B)2.9 m/s
• C)4.2 m/s
• D)3.5 m/s
• E)4.7 m/s

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