1. Impulse Inelastic Collisions 1 Example of an inelastic collision A pieces of putty is thrown against a box sitting at rest on a frictionless table. If the putty is twice the mass of the box, what is the speed of the box/putty combination compared to the original speed of the putty?

2. Impulse Inelastic Collisions 2 Impulse and Momentum Momentum Impulse x-component The total impulse acting on a systems is ALWAYS equal to the change in its momentum

3. Impulse Inelastic Collisions 3 Impulse and Momentum Elastic Collisions Inelastic Collisions Object 1Object 2 p 0x 2 kg m/s1 kg m/s p fx -3 kg m/s6 kg m/s p 0y 0 kg m/s p fy 2 kg m/s-2 kg m/s K0K0 12 J6 J KfKf 8 J10 J Object 1Object 2 p 0x 1 kg m/s p fx -3 kg m/s5 kg m/s p 0y 2 kg m/s0 kg m/s p fy 3 kg m/s-1 kg m/s During collisions momentum is always conserved and kinetic energy is sometimes conserved