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A car travels at a speed of 80 km/h ...

A car travels at a speed of 80 km/h during the first half of its running time and at 40 km/h during the other half. Find the average speed of the car. (60 km/h) `( AS_(7))`

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Knowledge Check

  • A car covers the first half of the distance between two places at 40 km/hr and another half at 60 km/hr. The average speed of the car is

    A
    40 km/hr
    B
    48 km/hr
    C
    50 km/hr
    D
    60 km/hr

  • A car covers half of its journey with a speed of 10ms^(-1) and the other half by 20 ms^(-1) . The average speed of car during the total journey is

    A
    `70ms^(-1)`
    B
    `15ms^(-1)`
    C
    `13.33ms^(-1)`
    D
    `7.5ms^(-1)`

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