Physics, asked by sreemonghosh, 4 months ago

A car covered a distance of 81 km. The speed of the vehicle was 9 km / h during the first one-third of that distance, 18 km / h in the next one-third and 21 km / h in the last third. What was the average speed of the car?

Answers

Answered by janhavimohite271

Explanation:

udidudidudiydu5xuysutsuycu

Answered by aayushdalvi17

Is the answer 14km/h
Pls confirm
Then i will send u the solution

sreemonghosh: Yes the answer is 14 km/hr

sreemonghosh: please tell me the solution

aayushdalvi17: U can directly solve it by this formula

V avg = 3*v1*v2*v3/ (v1*v2 + v1*v3 + v2*v3)

Mind u this equation is applicable only when equal disatnce is covered in unequal intervals of time

sreemonghosh: thank u so much

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A car covered a distance of 81 km. The speed of the vehicle was 9 km / h during the first one-third of that distance, 18 km / h in the next one-third and 21 km / h in the last third. What was the average speed of the car?​

Answers

A car covered a distance of 81 km. The speed of the vehicle was 9 km / h during the first one-third of that distance, 18 km / h in the next one-third and 21 km / h in the last third. What was the average speed of the car?