Question

Suppose that you have a masa os 45.7 kg and are standing on frictionless roller skates. Someone then throws you a 2.50 kg mass with a velocity of 14.5 m/s and you catch it. What will be your resultant velocity?

Answer 1

Conservation of Momentum:
m1u1+m2u2=m1v1+m2v2

m=mass
u=initial velocity
v=velocity after impact
1,2 objects, people.

Since the person catches the mass, the common velocity after "impact" is
v1=v2=v.

Solve for v, since all other variables are known.