A 531-g ball traveling at 6.02 m/s undergoes a sudden head-on elastic collision with a 214-g ball traveling toward it also at 6.02 m/s. What is the speed of the 214-g ball just after the collision? Give your answer in m/s. Hint: Velocity has direction. In 1D, we specify direction with the sign of the number.

A 531-g ball traveling at 6.02 m/s undergoes a sudden head-on elastic collision with a 214-g ball traveling toward it also at 6.02 m/s. What is the speed of the 214-g ball just after the collision? Give your answer in m/s. Hint: Velocity has direction. In 1D, we specify direction with the sign of the number.