Item EG025002: In order to know which of two objects is moving faster, you need to know the weight (mass) of each object in addition to the motion energy.

The kinetic energy (motion energy) of Object 1 is greater than the kinetic energy of Object 2. Is Object 1 moving faster, slower, or at the same speed as Object 2?

  1. Object 1 is moving faster than Object 2.
  2. Object 1 is moving slower than Object 2.
  3. Object 1 is moving at the same speed as Object 2.
  4. The only way to know which object is moving faster is to also know the weight (mass) of each object.