A body traveling from one place to another with a velocity 30km/h return to the same place with a velocity 40km/h . Calculate the average velocity and average speed?
Answers
Answer:
➪ Average velocity = 0 m/s
➪ Average speed = 17.14 km/h
Step by step explanations :
Given that,
A body traveling from one place to another with a velocity 30km/h return to the same place with a velocity 40km/h
let the
let the distance between the two places be d
and velocity with going market be V1
and returning velocity be V2
here,
V1 = 30 km/h
time taken = d/30 h
V2 = 40 km/h
time taken = d/40 h
Average velocity = displacement /time
here,
displacement of him = 0 km
because he returns to his initial position
so,
Average velocity = 0 m/s
now,
Average speed
= total distance travelled/time taken
here total distance travelled = 4000 m
total time taken = d/30 + d/40
= (4d + 3d) /120
= 7d/120 h
putting the values,
Average speed = d/(7d/120)
= 120d/7d
= 120/7
= 17.14 km/h
so,
Average speed = 17.14 km/h
________________
➪ Average velocity = 0 m/s
➪ Average speed = 17.14 km/h
Explanation:
hope it helps you
