Apple QuickTime movie | 1995-08-15 | 11.8 MB | 512x276 | 12fps | 2 minutes, 22 seconds | [MooV/TVOD]
Transcription: Here is a totally inelastic collision. A loaded freight car, mass 100,000 kilograms, rolls at 3 meters per second into a stationary car of mass 50,000 kilograms. When they hit, the coupler engages. This makes it inelastic. Then what happens? Solution? We want to find the velocity of the coupled cars. Call it V. Then, initial momentum equals 100,000 kilograms times 3 meters per second. Final momentum equals 150,000 kilograms times velocity. Since momentum is conserved, these two are equal. 150,000 kilograms times v equals 300,000 meters times kilograms per second. So, V equals 2 meters per seco ...
(.mp4)