Question

. A motorcyclist drives from A to B with a uniform speed of 40 km/h and returns back with a speed of 50 km/h. Find his average speed and average velocity

Answer 1

Answer:

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Answer 2

Answer: 400/9 , 0

Explanation:

average speed =total distance / total time

So total distance =d+d=2d(let distance between a and b be d)

Total time = d/40 + d/50

So by dividing

2d/(d/40+d/50)

By taking lcm and solving we get

2×40×50/(40+50)=400/9

Average velocity = total displacement/ total time taken

Total displacement is 0( as it comes back at point A ) so average velocity is 0