A body goes from A to B with a speed of 60 km h-1 , returns to the sta

1.	A body goes from A to B with a speed of 60 km h-1 , returns to the starting point with a speed of 40 km h-1 . find average speed and average velocity of body.
Answer» Answer: average velocity is 0 since displacement is 0 . average SPEED is 48km/hr Explanation average speed =TOTAL distance / total time let distance from a to B is X then total distance is 2x. speed=distance / time, time from a to b is x/60 and b to a is x/40, then total time x/60+x/40, average speed=2x/(x/60+x/40) =48km/h

A body goes from A to B with a speed of 60 km h-1 , returns to the starting point with a speed of 40 km h-1 . find average speed and average velocity of body.

Answer»

Answer:

average velocity is 0 since displacement is 0 . average SPEED is 48km/hr

Explanation average speed =TOTAL distance / total time

let distance from a to B is X then total distance is 2x.

speed=distance / time,

time from a to b is x/60 and b to a is x/40,

then total time x/60+x/40,

average speed=2x/(x/60+x/40)

=48km/h

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A body goes from A to B with a speed of 60 km h-1 , returns to the starting point with a speed of 40 km h-1 . find average speed and average velocity of body.

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