A ball of mass m1 travels along the x-axis in the positive direction with an ini

Question

A ball of mass m1 travels along the x-axis in the positive direction with an initial speed of v0. It collides with a ball of mass m2 that is originally at rest. After the collision, the ball of mass m1 has velocity v1xxhat + v1yyhat and the ball of mass m2 has velocity v2xxhat + v2yyhat.

Consider the following five statements:
I) 0 = m1v1x + m1v2x
II) m1v0 = m1v1y + m2v2y
III) 0 = m1v1y + m2v2y
IV) m1v0 = m1v1x + m1v1y
V) m1v0 = m1v1x + m2v2x
Of these five statements, the system must satisfy
a. I and II
b. III and V
c. II and V
d. III and IV
e. I and III

Explanation / Answer

b. III and V

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