A 4.00kg mass moving at 10.0m/s south collides with a stationary 8.00kg mass. The 4.00kg mass comes to a stop and the 8.00kg mass breaks into two equal pieces. one piece moves at 7.08m/s southeast. What is the velocity of the other piece?

a) 2.92m/s southeast
b) 2.92m/s southwest
c) 7.08m/s southeast
d) 7.08m/s southwest

Question

A 4.00kg mass moving at 10.0m/s south collides with a stationary 8.00kg mass.  The 4.00kg mass comes to a stop and the 8.00kg mass breaks into two equal pieces.  one piece moves at 7.08m/s southeast.  What is the velocity of the other piece?

a) 2.92m/s southeast
b) 2.92m/s southwest
c) 7.08m/s southeast
d) 7.08m/s southwest

anonymous · Answer

d)... because the two pieces are identical, it would have the same velocity but its direction would differ|dw:1340152689672:dw|