Rates of Change

A car travels 200km in 5 hours. What is its average speed?

• 50km/h

• 40km/h

• 1000km

• 50km

An athlete runs 400m in 64 seconds. What is his average speed?

• 9m/s

• 6m

• 100m/s

• 6.25 m/s

An aeroplane travels 2475 miles in 4 and a half hours. Work out the average speed of the Aeroplane.

• 550mph

• 619mph

• 495mph

• 500km/h

A swimmer completes a 50m length in 40 seconds. What is her average speed?

• 150m/s

• 5m/s

• 200m/s

• 1.25m/s

An arrow flies 15m to a target at an average speed of 60m/s. Find the time taken for it to reach the target.

• 60s

• 4s

• 0.25s

• 2s

A jockey completes a 2.4 mile course at an average speed of 32mph. Calculate the length of time it takes him in hours as a decimal.

• 0.75h

• 0.0075h

• 0.075h

• 0.4h

A jockey completes a 2.4 mile course at an average speed of 32mph. Calculate the length of time it takes him in minutes and seconds

• 4 minutes and 15 seconds

• 10 minutes

• 5 minutes and 5 seconds

• 4 minutes and 30 seconds

An aeroplane descends at a constant rate of 200 feet per minute. How long does it take the aircraft to descend from an altitude of 18000 feet to an altitude of 10000 feet?

• 40 minutes

• half an hour

• 2 hours and 10 minutes

• 45 minutes

Joanne drives 90 miles to visit friends. She plans to travel at an average speed of 55mph and wants to arrive by 1pm. Calculate the latest time Joanne should leave.

• 10:50am

• 11:15am

• 11:20am

• 11:35am

The channel tunnel is 31.4 miles long. The speed limit for trains in the tunnel is 160km/h. Work out the time taken for a train travelling at the speed limit to complete a journey through the tunnel.

• 19 minutes

• 22 minutes

• 17 minutes

• 15 minutes