Prelab Questions 1. Two carts collide together on a track. Explain what is meant by the phrase "total momentum is conserved" in terms of the carts' multiple masses and velocities. Compare the following pairs of numbers. Are they approximately the same or significantly different? 0.06 Joules and 0.12 Joules . 0.08 Joules and 0.11 Joules 2. Sketch a SPEED-time graph that shows the motion of two carts in the following scenarios: . An explosion in which two carts (of unequal masses) both start from rest. An elastic collision: Initially, one cart is in motion and the other is at rest. Both carts move forward at different velocities after the collision. (Think about who must be faster after the collision.) An inelastic collision in which one cart is initially in motion and the other is at rest. (Think about how their final velocities must compare.) Caption all of your graphs with words to identify what's happening before and after the interaction