Revision:Newtons laws of motion - The Student Room
Results are out! Find what you Get quick advice or join the chat
  • Revision:Newtons laws of motion

TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Mathematics > Newton's Laws of Motion


1st Law

  • An object will stay in a state of rest or in uniform motion unless acted on by an external force.

2nd Law

  • The force acting on a body is directly proportional to the mass of the body and its acceleration and is in the direction of the acceleration.
  • Force = Mass x Acceleration

For A Level maths and physics the following may also be useful:

The resultant force acting on a body is directly proportional to the rate of change of momentum of the body, and acts in the direction of the momentum change.

This can be mathematically notated as F = ma, which is equal to F = \frac{m(v-u)}{t}, as a = \frac{v-u}{t}.

3rd Law

  • To every action force, there is an equal and opposite reaction force.


Try Learn together, TSR's study area

revision notes




a study planner

of discussions

Have you ever posted a picture of your food on social media?
Results and Clearing

Results are coming...

No sweat. Here's all you need to make sure you're ready

new on tsr

Join the American Society

Whether you're from the USA or just love it!


Think you'll be in clearing or adjustment?

Hear direct from unis that want to talk to you

Get email alerts for university course places that match your subjects and grades. Just let us know what you're studying.