A car travels at the rate of 25 km/h for 4.0 minutes, then at 50 km/n for 8.0 minutes and finally at 20 km/h for 20
minutes. Find the total distance covered in km.
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Answer:
Total distance travelled S = S1 + S2
= 50km + 60km
= 110 km.
Total time t = t1 + t2
t = S1/V1 + S2/V2
t = 50/25 + 60/20
Average velocity = total distance travelled S/
total time of journey t
= 110km/5h
= 22kmh-1.
hope it will help you...
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