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25 November, 20:02

A car approaches a stop sign going 5 m/s before it comes to a stop. If it does this in 4 seconds, what was

its acceleration?

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Answers (1)
  1. 25 November, 23:02
    0
    Acceleration = - 1.25 m/s²

    Step-by-step explanation:

    Given dа ta:

    initial velocity = 5 m/s

    Final velocity = 0 m/s since the car stopped

    change in time = 4 seconds

    Acceleration = change in velocity/change in time

    Acceleration = (Final velocity - Initial velocity) / time

    Acceleration = (0-5) / 4

    Acceleration = - 5/4

    Acceleration = - 1.25 m/s²

    The acceleration in negative since the car was reducing speed to stop, it can also called deceleration.
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