A car covers a certain distance at a rate 72 km/hr. Calculate the time in seconds, required by the car
to cover a distance of 2200 metres.
If 75 m of a copper wire costs 2250, what is the length of a copper wire that can be purchased for
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Answer:
conversion of km per hour to metre per second is to multiply it by 5/18
therefore 72×5/18= 20m/s
Then speed = distance/time
time= distance/speed
time= 2200/20
time=110s
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