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21 February, 21:43

A car travelling at 40 m/s comes to a halt in 8 seconds. What is the car's acceleration and how far does it travel while it is stopping?

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  1. 21 February, 22:32
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    Answer: Acceleration = 5m/s^2; Distance traveled = 320 m

    Explanation:

    Velocity of car = 40m/s

    Time taken = 8 seconds

    Acceleration = ?

    Distance traveled = ?

    A) Since acceleration is the rate of change of velocity per unit time

    i. e acceleration = velocity / time

    acceleration = 40m/s / 8 seconds

    Acceleration = 5m/s^2

    B) To get how far the car traveled before stopping, obtain the distance from the formula:

    velocity = distance traveled / time

    40m/s = distance / 8 seconds

    Distance = 40m/s x 8 seconds

    Distance = 320 m

    Thus, the car's acceleration is 5m/s^2 while it traveled 320 metres before stopping.
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