Case 1- We have two masses of equal size. Mass 1, with positive velocity, collides with Mass 2. This causes Mass 1 to have 0 velocity in the end and Mass 2 to have a velocity.
Case 2- A mass (1) collides with a larger mass (2) that is three times the size. Mass 1 initially has a positive velocity, while mass 2 has 0 velocity. The collision causes the mass 1 to have a negative velocity, while giving mass 2 a velocity that is unknown to us.
In what case would the mass 1 exert a larger impulse on mass 2, if any? Why?