A car travels a certain distance with a speed of 50 km/h & returns with a speed of 40km/h. calculate average velocity of car for the whole journey.
Answers
Answered by
0
Answer:
let the car travels a distance x km at 50 km/h.
=> x/50 hours.
as car travels the same distance x km at 40 km/h.
=> x/40 hours.
Total distance= 2x km
Total time= x/50 + x/40 hs
Avg speed = Total dist. / Total time
=> 2x / (x/50 + x/40)
=> 2 * 50 * 40 / (50 + 40)
=> 44.4 km/h
hope it helped you out mate
Answered by
0
Answer:
hi here goes your answer
Explanation:
v = Dist/Time = (50+40)/2 = 90/2
45 1000m/1km
45000m 3600s/1hr
3600*2 = 7200
45000/7200
6.25m/s
hope it helps you
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