Calculating speed Speed is a ____ of how fast something ____. We often ____ speed in kilometres ____ hour (km/h). That is how many kilometres something ____ in one hour. For example, if Car A ____ 100 kilometres in two hours, it's ____ at 50 km/h. If Car B goes the same ____ in only 30 minutes, it's travelling ____ 200 km/h. Converting speed We can ____ speeds from kilometres per hour to metres per second (m/s). We multiply by 1,000 (the number of metres in one kilometre) and then ____ by 3,600 (the number of seconds in one hour). To ____ m/s into km/h, we do the ____. We multiply by 3,600 (seconds in an hour) and divide by 1,000 (metres in a kilometre). Calculating distance and time If we know a car's speed and the ____ of time it travels, we can find out the distance it goes. We ____ the speed and the time. If we know a car's speed and the distance it travels, we can calculate the time it ____. We divide the distance by the speed.

Maths / Speed / Prepare 5

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