# Physics forces and motion AQA additional science (Yr9)

I dont know if this is detailed enough for Yr10 above, but it has some good stuff in it, each subtopic is on a different page. Please rate and comment so that I can improve c: Hope it helps!!

Thaaaanks x

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• Created by: Aaliya
• Created on: 26-05-12 10:10

## Pages in this set

### Page 1

MOTION
Scalars and Vectors

A quantity with just a magnitude is a SCALAR

A quantity with magnitude and direction is a VECTOR

SCALA VECTOR
R
Distanc Displacemen
e t
Speed Velocity
Mass Forces
Time Acceleration
Pressur
e

DistanceTime Graphs

Straight is constant velocity

Positive Gradient is travel in one direction…

### Page 2

FORCES AND TERMINAL VELOCITY
Terminal Velocity

1. The weight of the object. This is a force acting downwards, caused by the object's mass
the Earth's gravitational field.
2. Air resistance. This is frictional force acting in the opposite direction to the movement of
the object.

When an object is dropped,…

### Page 3

FORCES AND ELASTICITY
Hooke's Law

When an elastic object such as a spring is stretched, the increased length is called its
extension. The extension of an elastic object is directly proportional to the force applied to it:

F = k × e

F is the force in newtons, N

k…

### Page 4

The gradient of the line is the spring constant, k. The greater the value of k, the stiffer the
spring.

Elastic potential energy

A force acting on an object may cause the shape of an object to change. Elastic objects can
store elastic potential energy if they are stretched.

Acceleration…