A men moves from a place with a constant speed of 40 metre per second and then he returns back to p along the same route with a speed of 20 metre per second. then calculate the average speed.
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Answer:
Given,
Speed = 40m/s,20m/s
Time = 2sec
Distance = Speed × time
= 60 × 2
= 120m
Average Speed = Total distance travelled / time
= 120 / 2
= 60m/s.
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