# unit 5 physics

- Created by: pheath1999
- Created on: 09-05-21 15:00

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- FORCES
- GRAVITY
- ACCELERATION
- MOMENTUM
- Momentum is mainly about how much umph an object has, its a property that all moving objects have.
- The bigger, faster and the more velocity an object has, the more momentum it will have.
- Momentum is a vector quantity, it has size and direction.
- You can work out momentum using the equation: P=MV
- MOMENTUM = MASS X VELOCITY

- You can work out momentum using the equation: P=MV

- Momentum is a vector quantity, it has size and direction.

- Scalar and Vector Quantities

- A moving car hits the back of a parked car. he crash causes the two cars to lock together and they continue moving in the direction that the original moving car was travelling but at a lower velocity.
- Before, the momentum was equal to the mass of the moving car X its velocity. After:The mass of the moving object has increased but its momentum is equal to the momentum before the collision.
- Lots of physical quantities are vector quantities: Vector quantities, force, velocity, displacement, acceleration and momentum.
- Some physical quantities only have magnitude, (no direction), these are called SCALAR quantities Eg. speed, distance, mass, temperature and time. .

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