You and your friends are doing physics experiments on a frozenpond that serves as a frictionless, horizontal surface. Sam,with mass 80.0 kg, is given a push and slides eastward. Abigail, with mass 50.0 kg, is sent sliding northward. Theycollide and after the collision, Sam is moving at 37.0degrees north of east with a speed of 6.00 m/s and Abigail ismoving at an angle β=23.0 degrees south of east with a speedof 9.00 m/s.
By how much did the total kinetic energy of the two peopledecrease during the collision?
1 answer