# Momentum

- Created by: Laurenrhughes1
- Created on: 14-12-15 09:23

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- Momentum
- Law of conservation of momentum
- Total momentum before interaction = total momentum after
- Doesn't apply when external forces like friction are applied.
- So works when in a closed system

- Mass X Velocity
- kg m/s = unit
- or NS = Newton seconds

- Has size and direction
- PRACTICAL
- Use a computer and a motion sensor to investigate a collision between 2 trolleys.
- Trolley A is given a push so it collides with trolley B. The 2 trolleys stick together after the collision.
- The computer gives the velocity of A before the collision and the velocity of both trolleys afterwards.
- Measure the mass of the trolleys

- Measure the mass of the trolleys

- The computer gives the velocity of A before the collision and the velocity of both trolleys afterwards.

- Trolley A is given a push so it collides with trolley B. The 2 trolleys stick together after the collision.

- Use a computer and a motion sensor to investigate a collision between 2 trolleys.

- Law of conservation of momentum

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