### Resources

March 2022 – Physics AS, Session 3 (allan o 4)

- the concept of force and Newton’s 3rd law of motion
- how free body diagrams can be used to represent forces on a particle or body
- the use of the relationship F=ma in situations where mass is constant
- the idea that linear momentum is the product of mass and velocity
- the concept that force is the rate of change of momentum, applying this in situations where mass is constant
- the principle of conservation of momentum and use it to solve problems in one dimension involving elastic collisions and inelastic collisions