6. AQA GCSE Physics (9-1) Motion

What is a scalar quantity?

A quantity with only magnitude (size)

What is a vector quantity?

A quantity with both magnitude (size) and direction

Give four examples of scalar quantities

Speed

Distance

Energy

Mass

Give four examples of vector quantities

Velocity

Displacement

Acceleration

Force

What is the unit of speed and velocity?

m/s

Write the word equation that links velocity, time and displacement

displacement = velocity x time

Write the symbol equation that links velocity, time and displacement using symbols

s=vt

What is a typical speed of a person walking?

1.5 m/s

What is a typical speed of a person running?

3 m/s

What is a typical speed of a car?

25 m/s

Write the word equation that links time, acceleration, initial velocity and final velocity

Acceleration = (final velocity - initial velocity)/time

Write the symbol equation that links time, acceleration, initial velocity and final velocity using standard symbols

a=(v-u)/t

How is a stationary object represented on a distance-time graph?

A horizontal line

What feature of a distance-time graph represents the velocity of an object?

The gradient

How do you calculate the speed from a curved distance-time graph?

Draw a tangent than calculate the gradient of the tangent

What does a horizontal line on a velocity-time graph represent?

Constant velocity

How is a stationary object represented on a velocity-time graph?

A horizontal line on the x-axis

How do you calculate the distance travelled from a velocity-time graph?

The area underneath the graph

Property of a velocity - time graph that is equal to the acceleration of the object

Gradient

Constant acceleration graph

Constant deceleration graph

A runner accelerates from rest to 8m/s in 16s. what is her acceleration?

0.5m/s^2

Acceleration graph

Constant velocity graph

Displacement back to the starting point graph

Stationary object v-t graph

Constant acceleration equation

v^2 - u^2 = 2as

Terminal velocity

the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity

A more massive object will have a

larger terminal velocity