PDA

View Full Version : 2 discs, frictionless... help!


droomagon
Oct5-04, 12:02 PM
This is the question that i have on my paper...

Two discs (both circular shape) on a frictionless table, disc 1 with mass 100g moves with velocity 1m/s and collides "head on" elastically without any energy loss with disc 2 with mass 200g and motionless; what will be the final velocity after collision?

Thanks in advance!

HallsofIvy
Oct5-04, 12:08 PM
Use "conservation of momentum" and "conservation of energy". What have YOU done on htis?