what is the average speed of a student practicing for a track meet ran 250 meters in 30 seconds?
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M$2 Answers
Average speed = distance/time
distance = 250 meters
time = 30 seconds
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M$
If you know how many metres they run in 30 seconds, you can work out how many metres they run in an hour - there are (2*60) 30 second segments in an hour.
This will then give you their speed in metres per hour. There are 1000 metres in a kilometre, so divide the answer by 1000 to give a speed in km/h.
Personal knowledge.
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