initial momentum South = 25 * 30 + 10 * 15
final momentum south = 25 * 22 + 10 * whatever
so
10* whatever = 750 + 150 - 550 = 350
whatever = 35 m/s
I disagree with all of them
A 25 kg ball is moving southward at 30 m/s collides with a 10 kg ball moving along the same line with a velocity of 15 m/s southward. After the
collision, the 25 kg ball attains a velocity of 22 m/s southward. What is the velocity of the 10 kg ball?
A. -48.5 m/s
B. 48.7 m/s
C. 47.5 m/s
D. -47.5 m/s
1 answer