a car does 8 laps of 300m course. it takes 4.0 minutes to complete the race. What was the average speed of the car?
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Answer:
length of the course =300m
no. of laps. =8
therefore total length=8*300
= 2400m
total time taken = 4min or 4*60sec
= 240sec
avg speed= total distance /total time taken
=2400/240
=10m/s
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