# AQA Physics Revision - Forces And Motion

Detailed notes on Forces and Motion from textbook

(well, short but detailed)

- Created by: SKarimpour
- Created on: 25-04-10 15:27

First 181 words of the document:

Motion

Speed (m/s) = Distance (m) / Time (s) - (Time = Speed / Distance) or

(Distance = Speed x Time)

Distance-time graphs:

Vertical Axis = Distance traveled

Horizontal Axis = Time

Line on graph horizontal = Stationary

Sloped, straight line = Steady speed

Steeper the line = Greater the speed of the object

Velocity-time graphs:

Vertical axis = Velocity

Horizontal axis = Time

Line on graph horizontal = Constant velocity

Sloped, straight line = Constant acceleration

Steeper the line = Greater the acceleration of the object

Area under the line = Distance

Acceleration = Change in velocity / Time

Kinetic Energy

Unit of work is measured in Joules/J.

Resultant force = 0 = stays constant (stationary/moving)

Resultant force > 0 = constant goes in direction of resultant / moving

changes to direction of the resultant force (speeds up, slows down or

changes direction)

Doubling size of the force = doubling the acceleration

Doubling the mass = halves the acceleration

Resultant force (N) = mass (kg) x acceleration (m/s) Mass = Force /

Acceleration - Acceleration = force / mass

## Comments

No comments have yet been made