2. motion

Speed with distance & time

Speed with distance & time

distance / time

Velocity equation

displacement / time

Acceleration definition

rate of change of velocity (doesn’t have to be getting faster)

Acceleration equation with time

a = acceleration
t = time
u = starting velocity
v = ending velocity

Acceleration in a free fall

10m/s²

Instantaneous speed

speed at any given moment throughout the journey

Average speed

speed averaged taking into account the whole journey

Gradient on a distance/time graph

speed

steeper gradient = more speed

Straight line on a distance/time graph

constant speed

Horizontal line on a distance/time graph

stationary

aka constant speed of 0

Area bounded on a distance/time graph

no meaning

Gradient on a velocity/time graph

acceleration

line sloping up = acceleration

line sloping down = deceleration (negative acceleration)

Straight line on a velocity/time graph

constant acceleration

Horizontal line on a velocity/time graph

constant velocity

Area bounded on a velocity/time graph

Distance travelled

Gradient equation

rise / run

1. Pick two points on a line

2. Find the vertical distance between points (rise)

3. Find the horizontal distance between points (run)

4. Divide the rise by the run