Two Objects of Equal Mass Collide on a Horizontal Frictionless

question 22

Multiple Choice

Two objects of equal mass collide on a horizontal frictionless surface. Before the collision, object A is at rest while object B has a constant velocity of 12 m/s. After the collision, the two objects are stuck together. What is the speed of the composite body (A +B) after the collision?

• A)3.0 m/s
• B)6.0 m/s
• C)12 m/s
• D)24 m/s
• E)36 m/s

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