Cart A, with a Mass of 0

question 24

Multiple Choice

Cart A, with a mass of 0.2 kg, travels on a horizontal air track at 3 m/s and hits cart B, which has a mass of 0.4 kg and is initially at rest. After the collision the center of mass of the two cart system has a speed in m/s of:

• A) zero
• B) 0.33 m/s
• C) 2.3 m/s
• D) 2.5
• E) 5.0 m/s