Groups are asked to analyze the following standard problem:
Two identical lumps of clay of (rest) mass m collide head on, with each moving at 3/5 the speed of light. What is the mass of the resulting lump of clay?
Two identical lumps of clay of (rest) mass \(m\) collide head on, with each moving at 3/5 the speed of light.
What is the mass of the resulting lump of clay?