A body covers 1 st hape with speed V1 and next hape with speed V2. Find the average speed of the body.
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Question should be:
“A body covers 1 st half with speed V1 and next half with speed V2. Find the average speed of the body.”
Let Total distance be “x”
Average speed = Total distance / Total time
= x / (t₁ + t₂)
= x / [x/(2v₁) + x/(2v₂)] ………[∵ Time = Distance / Speed]
= 2v₁v₂ / (v₁ + v₂)
∴ Average speed of body is 2v₁v₂ / (v₁ + v₂)
“A body covers 1 st half with speed V1 and next half with speed V2. Find the average speed of the body.”
Let Total distance be “x”
Average speed = Total distance / Total time
= x / (t₁ + t₂)
= x / [x/(2v₁) + x/(2v₂)] ………[∵ Time = Distance / Speed]
= 2v₁v₂ / (v₁ + v₂)
∴ Average speed of body is 2v₁v₂ / (v₁ + v₂)
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