Motion

speed = [blank_start]total[blank_end] [blank_start]distance[blank_end] / [blank_start]total[blank_end] [blank_start]time[blank_end]

When dealing with speed/time graphs, the area under the line equals the [blank_start]distance[blank_end] [blank_start]travelled[blank_end].

When dealing with speed/time graphs, the gradient equals the [blank_start]acceleration[blank_end].

When dealing with distance/time graphs, the gradient equals the [blank_start]speed[blank_end].

acceleration = [blank_start]change[blank_end] [blank_start]in[blank_end] [blank_start]speed[blank_end] / [blank_start]time[blank_end] [blank_start]taken[blank_end]

Acceleration is a vector quantity.

Objects are slowed down by [blank_start]air[blank_end] [blank_start]resistance[blank_end]. Once [blank_start]air[blank_end] [blank_start]resistance[blank_end] is equal to the force of [blank_start]gravity[blank_end], the object has reached [blank_start]terminal[blank_end] [blank_start]velocity[blank_end]. This means that it will stay at a [blank_start]constant[blank_end] [blank_start]velocity[blank_end]. The acceleration of [blank_start]free[blank_end] [blank_start]fall[blank_end] for a body near to the Earth is [blank_start]constant[blank_end]. [[blank_start]g[blank_end] = [blank_start]10m/s^2[blank_end]]