Physics, asked by khalid0786, 1 year ago

A car moves trough 20 km at a speed of 40 km /h and the next 20 km at a speed of 60 km /h . calculate its average speed

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Answers

Answered by Anonymous
1

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Distance = 20 km

Speed = 40 km/hr

Time, t1 = 20/40 = 1/2 hrs

Speed = 60 km/h

Time, t2 = 20/60 = 1/3 hrs

Total time = t1 + t2 = 1/2 + 1/3 = 5/6 hrs

Average speed = (20+20)/(5/6)

Average speed = (20+20)/(5/6) = 48 km/hr

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Answered by AzeemAhmedKhan
2

to find out the average speed we have to take the sum of all the speed and divided by the number of speed

according to your question (20 + 40 + 60) /3

average speed comes to 40 km / hr


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