Definitions - momentum

• Conserve


  Keep the same. Cannon example - to conserve momentum the cannon must move backwards when the ball moves forwards
• Momentum


  The product of an object’s velocity and mass. The more massive the object, the more momentum at the same speed. The greater the speed of an object, the greater the momentum.
• Vector


  Something with both magnitude and direction
• Rate of change


  The amount something changes per second