Physics, asked by zoya2801, 1 year ago

a man travels one third length of a straight road with a constant speed 40 m s and the remaining portion of the road with a constant speed of 60ms and then calculate it's average speed

Answers

Answered by ashish771

avg speed for this question is 51.42km/h
formula of avg speed is 3(V1.V2) / 2V1 + V2.
where V 1 equals to 40 and V2 equals to 60.

ashish771: suppose x = distance

ashish771: v= velocity

ashish771: now

ashish771: avg speed= x whole upon x/3V1 + 2x/3V2

ashish771: if you slove that you will get 3V1V2 upon 2V1 +V2

ashish771: V1 = 40 and V2 = 60 place the value and you will get the answer

zoya2801: thank you so much

ashish771: it's ok

ashish771: In which class you are

ashish771: I m in 11th

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