**2 (b) calculate average speed using distance traveled/time taken.**

The formula for calculating speed is

**distance traveled/ time taken**. Lets say a car covered a distance of 300 m in 30 seconds, the speed of the car would be 300/30 = 10 m/s. If you are wondering where the units m/s came from, it is quite simple. The unit for distance is m, meters. The unit for time is s, seconds. As speed is distance/time, we can say it is m/s, which are the units of distance and time respectively. It means how much distance a body is covering in one second. So if an object is moving at a speed of 10m/s, it is actually covering a distance of 10 meters every second. Also, remember that the unit for speed and velocity is the same.

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