[Ans: 50/9 m/sec, 6 sec]
111) A car travels at a speed of 50 km/hr for 30
minutes, at 30 km/hr for next 15 minutes
and then 70 km/hr for next 45 minutes.
What is the average speed of the car?
[Ans: 56.66 km/hr]
A velocity-time graph is shown in the
adjoining figure.
Answers
Answered by
0
Answer:
Average Speed = Total Distance /Total Time
Distance = speed × time
Change time into Hour
s1 = 50× .5 = 25km/hour
s2 = 7.5
S3 = 52.5
t1=.5
t2=.25
t3=.75
Put Value Get answer
Vav = 56.66Km/hour
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