All of AQA Forces and Motion Explained - GCSE 9-1 Physics REVISION

This video is a summary of all of AQA Forces and Motion, explained for GCSE Physics 9-1. You can use this as an AQA Forces and Motion revision tool. We cover scalars, vectors, forces, equations, circular motion, pressure, distance-time graphs, velocity-time graphs, elasticity, work done, weight, Newton's Laws, stopping distance, momentum and density. There is too much to even summarise in the description but some of the important bits are:

Quantities are split into scalars and vectors, scalars just have size whereas vectors have size and direction. Forces, which are vectors, can be split into contact (friction, drag, tension etc.) and non-contact forces (gravity, electrostatic, magnetic). Forces are measured in newtons, N.

Two or more forces acting on an object are combined to give the resultant force acting on the object. A single force acting at an angle on an object can be resolved into its different components.

Weight = mass x acceleration due to gravity, W = mg
Work done = force x distance, W = Fs
Force on a spring = elastic coefficient x extension, F = ke

Distance and speed are scalars but displacement, velocity and acceleration are vectors. Both distance and displacement are denoted by s. Both speed and velocity are denoted by v.
v = s/t and s = vt. a = (v-u)/t = Δv/t.

Momentum is the "amount of motion" that an object possesses. Momentum = mass x velocity, p = mv. Force is defined as the rate of change of momentum, F = dp/dt.

Thanks for watching,

Lewis

Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)

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