The distance travelled by an object per unit of time
speed
What is the SI unit for speed?
metres per second (m/s)
The figure shows the distance-time graph for a train. What is the average speed in km/h ?
50 km/h
The figure shows the distance-time graph for a running child. What is the average speed in m/s ?
1 m/s
How many seconds does it take a dog to travel 84 metres at a constant speed of 12 m/s?
7 seconds
In which part of the graph is the object at rest, stationary? A, B, C, D or E ?
D
A cyclist moves at a constant speed of 12 km/h for 20 minutes. How much distance does he travel in metres?
4000 m
The distance-time graph shows the motions of three cars: A, B and C. Which car is the fastest?
A
The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is...
the kilometre per hour (km/h)
A rabbit runs 90 m in 15 s. What is it speed?
6 m/s
The SI unit of speed is the metre per second (m/s), but in the US and the UK a common unit of speed is...
miles per hour (mph)
An aircraft travels 900 metres in 3.0 seconds. What is its speed?
300 m/s