1. Consider the following collision, which takes place at relativistic speeds: 0.8c 0.6:: Before: 0.8: 0.6:: After: -@ (a) Using the correct relativistic expression for momentum, show that total momentum is conserved during this collision. (b) Using the relativistic velocity transformation, determine the four velocities observed in a reference frame which is moving to the right at 0.8c. (0) Verify that momentum is conserved in this new reference frame