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What is the average speed of a car which takes 2 hours to travel 160 km?

Speed 01

Speed is a measure of how fast something moves. In science, it’s calculated by dividing the distance travelled by the time taken to travel it.

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Fascinating Fact:

The peregrine falcon is even faster, diving at over 200 miles per hour.

In KS3 Science, pupils learn how to measure and calculate speed. They explore real-life examples, from running races to vehicles, and discover the link between distance, time, and speed.

Key Terms

Speed: The distance travelled in a certain amount of time.
Velocity: Speed in a specific direction, such as 60 mph north.
Acceleration: The rate at which speed or velocity changes over time.

Frequently Asked Questions (Click to see answers)

How do you calculate speed in KS3 Science?

Speed is calculated by dividing distance by time. For example, if you travel 100 metres in 20 seconds, your speed is 5 metres per second.

What is the difference between speed and velocity?

Speed tells you how fast something is moving, while velocity includes both speed and direction, such as 30 mph east.

What are some examples of very fast animals?

Besides peregrine falcons, cheetahs can reach speeds of around 70 mph on land, and sailfish are among the fastest in the ocean.

Try These Related Quizzes

1 .

The average speed of a car which takes 2 hours to travel 160 km is .......

80 m/s

80 km/s

80 km/h

320 km/h

160 km/2 h = 80 km/h. Note how the units match those given in the question

2 .

The speed of a cyclist who rides 300 metres in 25 seconds is .......

0.12 m/s

12 m/s

24 m/s

7,500 m/s

300 m/25 s = 12 m/s

3 .

A cyclist travels 900 metres in 1 minute. The speed in m/s is .......

9 m/s

15 m/s

30 m/s

900 m/s

1 minute = 60 seconds so speed = 900/60 = 15 m/s

4 .

An athlete runs 1 km in 100 seconds. Her speed in m/s is .......

0.001 m/s

1 m/s

10 m/s

100 m/s

1 km = 1,000 m so speed = 1,000 m/100 s = 10 m/s

5 .

The speed of an athlete who runs 200 metres in 20 seconds is .......

0.1 m/s

10 m/s

10 km/s

4,000 m/s

200/20 = 10 m/s

6 .

A bus takes 2 hours to travel 40,000 metres. The average speed of the bus in km/h is .......

2 km/h

20 km/h

33 km/h

200 km/h

40,000 m = 40 km so speed = 40/2 = 20 km/h

7 .

A car travels 20 km in 12 minutes. The speed in km/h is .......

0.2 km/h

100 km/h

120 km/h

240 km/h

12 minutes = 12/60 = 0.2 hours so 20 km/0.2 h = 100 km/h

8 .

It takes an hour to walk 1,800 metres up a steep hill. The speed in m/s is .......

0.5 m/s

1 m/s

1.8 m/s

2 m/s

1 hour = 60 minutes = 3,600 seconds so speed = 1,800/3,600 = 0.5 m/s

9 .

A child walks 90 metres in 3 minutes. The speed in m/s is .......

0.3 m/s

0.5 m/s

3 m/s

5 m/s

3 minutes = 180 seconds so speed = 90/180 = 0.5 m/s

10 .

The SI unit of speed is .......

cm/s

m/s

km/s

m/h

Speed is also measured in km/h, miles/h - you must make sure units are correct

You can find more about this topic by visiting BBC Bitesize - Motion and speed

Author: Sue Davison (Chemistry Specialist & KS3 Science Teacher, Quiz Writer)

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