Block A, with a Mass of 2

question 78

Multiple Choice

Block A, with a mass of 2.0 kg, moves along the x axis with a velocity of 5.0 m/s in the positive x direction.It suffers an elastic collision with block B, initially at rest, and the blocks leave the collision along the x axis.If B is much more massive than A, the velocity of A after the collision is:

• A)0 m/s
• B)+5.0 m/s
• C)-5.0 m/s
• D)+10 m/s
• E)-10 m/s

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