Recall that for oblique impact problems, it is recommended that you use three FBDs: A alone, B alone and A+B together. A+B together allows us to make the impact force internal (and not appear in the ...

It is recommended that you work with the system make up of A and B together. With such a system, you can avoid dealing with the internal contact force when using the linear impulse-momentum equation.

Consider two model cars of mass 1.2 and 1.4 kg colliding at the speeds shown: If the two cars stick together after the collision and move as one then the velocity \({v _{AB}}\) of the two cars can be ...