Question

Two cars A and B race each other. The Car A ran for 2 minute at a speed of 7.5 km/h, slept for 56 minute and again ran for 2 minute at a speed of 7.5 km/h. find the average speed of the car A in the race

Answer 1

Answer:

Distance = speed×time

Distance = speed×timed1 = 7.5×2/60

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 km

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60d2 = 0.25 km

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60d2 = 0.25 kmTotal distance = d1+d2 = 0.5 km

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60d2 = 0.25 kmTotal distance = d1+d2 = 0.5 kmTotal time = 2+2+56 = 60min = 1 hr

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60d2 = 0.25 kmTotal distance = d1+d2 = 0.5 kmTotal time = 2+2+56 = 60min = 1 hrAverage speed = 0.5/1

Distance = speed×timed1 = 7.5×2/60d1 = 0.25 kmd2 = 7.5×2/60d2 = 0.25 kmTotal distance = d1+d2 = 0.5 kmTotal time = 2+2+56 = 60min = 1 hrAverage speed = 0.5/1= 0.5 km/hr.........☺

Explanation:

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