A car travels 30km at a uniform speed of 60km/h and the next 30km at a uniform speed of
90km/h. find the average speed
pls ans very urgent
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A car travels 30km at a uniform speed of 60km/h and the next 30km at a uniform speed of
90km/h. find the average speed
pls ans very urgent
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Explanation:
For the first 30 km travelled, speed = 60 km/h. = 0.5 h-1 or 30 min. = 0.75 h-1 or 45 min. = 75 min or 1.25 h.
Verified answer
GIVEN
(first time)
[Time = 1 hour
Speed = 60 km
Distance travelled = 30 km]
(Second time)
[Time = 1 hour
Distance travelled = 30 km
Speed = 90km]
TOTAL DISTANCE COVERED = 30+30=60
Total time taken = 2 hour
Average speed = 60/2=30km ans.