A car travels with a speed of 30 km/h in first second, with 40 km/h in next two seconds and with
50 km/h in next three seconds. Find the average speed of the car.
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2
Answer:
30+40+50/3=40km/h
Explanation:
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ANSWER
The speed of car @ 30 km/h= 75/9 m/s
The speed of car@ 40 km/h= 100/9 m/s
The speed of car @ 50 km/h= 125 m/s
Distance covered by the car in 1 s @ 30 km per hour, in two seconds @ 40 km per hour and in 3 seconds @ 50 km per hours = (75/9)(1)+(100/9)(2)+(125/9)(3)=(650/9) metre in 6 seconds.
Average speed= (650/9)÷6= 650/54 metre per second=(130/3) km/h= 43.33 km/h.
Explanation:
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