Describing Motion

Question 1

Speed, Distance and Time Formula

Answer 1

Speed = Distance/Time

Question 2

Understanding acceleration

Answer 2

An object accelerates when its speed increases. It’s acceleration tells us the rate at which it’s speed is changing - the change in speed unit time, and if an object decreases speed it is known as deceleration.

Question 3

Speed and distance in graphs

Answer 3

Distance = Area under speed time graph
Speed = Gradient of distance-time graph

Question 4

Velocity

Answer 4

• Object’s speed in a particular stated direction
  
  • Vector quantity
  • Weight is an example

Question 5

Acceleration

Answer 5

• The rate of change of an objects velocity

- Acceleration = change in velocity/time taken