what is average speed? The speed of a car for forward journey is 80 km h^-1 and for return journey is 60 km h^-1. find the average speed of a car during the journey?
Answers
Answered by
2
Explanation:
- A car moving at a speed of 50 km/hr, returns with a speed of 40 km/hr. What is the average speed?
- Data transfer seems difficult? Make it a seamless task!
- Let journey be from A to B & distance between A to B is x km.
- Going speed 50 km/ hr. Distance = x.
- Time taken = x / 50 hr.
- Returning back from B to A:
- Distance = x km.
- Speed = 40 km/ hr.
- Time taken = x / 40 hr.
- Average speed =
- Total distance covered/ total time taken
- = 2*x / (x/50 + x/40)
- = 2 * 50 * 40 / 90
- = 4000/90 = 44.44 km/ hr.
- Answer: Average speed 44.44 km/ hr.
Answered by
2
Answer:
average = addition of numbers/ no. of observation
so, 80+60/2 = 140/2 = 70 km/h
Explanation:
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