Momentum and Collisions
- Momentum (kg m/s) = mass (kg) x velocity (m/s)
- The greater the mass of an object and the greater its velocity, the greater its momentum will be.
- Momentum is a vector quantity, so it has size and direction.
- Momentum before = momentum after.
- Momentum is conserved when no external forces act.
- Forces are what cause changes in momentum.
- Force acting = change in momentum (kg m/s)/ time taken for change to happen (secs)