. A car travelled the first third of a distance d at a speed of 1 m/s, the second
third at a speed of 2 m/s and the last third at a speed of 6 m/s. Determine
the average speed of the car.
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Answer:
T1=x/1,T2=x/2,T3=x/6........
Total distance= x+x+x=3x......
Total time = t1+t2+t3= x/1+x/2+x/6=10x/6....
Average Speed = 3x/10x/6......
Average Speed = 3x6/10= 1.8.......
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