please can someone answer A child moving on a circular track of radius 40 meter completes one revolution in 5 minutes. find average velocity and average speed.
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Answer:
Here,
Radius = 40m
circumference= π×40^(2)
= 5026.5m
So,
distance travelled = 5026.5m
Time taken = 5min/ 300sec
Average speed = Distance/ time
= 5026.5/ 300
= 16.75m/sec
After completing one revolution the total displacement of the child is zero
Hence,
Averege velocity = Displacement/ time
= 0/300sec
= 0
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