a car moves with a speed of 30 kmh for 3 hours and then moves with a speed of 40 kmh for 2 h .what is the magnitude of average velocity of the car?
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Answer:
34 km/h
Explanation:
Average speed = Total distance/Total time taken
Distance = speed x time.
S1 = 30x3 = 90km.
S2 = 40x2 = 80km.
Total time taken = (3+2)h = 5h
Average speed = (90+80)km/5h
Average speed = 170/5 = 34km/h.
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