A toy car of mass 4.0 kg is sitting stationary when a child rolls a toy truck of mass 6.5 kg straight towards it in the negative x-direction with a speed of 5.0 m/s.The velocity of the center of mass of the system consisting of the two toys is
A)2.1 m/s .
B)-2.1 m/s .
C)3.1 m/s .
D)-3.1 m/s .
E)33 m/s .

Question

A toy car of mass 4.0 kg is sitting stationary when a child rolls a toy truck of mass 6.5 kg straight towards it in the negative x-direction with a speed of 5.0 m/s.The velocity of the center of mass of the system consisting of the two toys is
A)2.1 m/s . 
B)-2.1 m/s . 
C)3.1 m/s . 
D)-3.1 m/s . 
E)33 m/s .

Quizplus · Accepted Answer

The Answer is D

A Toy Car of Mass 4