A car is traveling with a velocity of 65.0 km/h. In the next 15 minutes the car gradually slows down at the end of the 15 minutes the car is

Question

A car is traveling with a velocity of 65.0 km/h. In the next 15 minutes the car gradually slows down at the end of the 15 minutes the car is traveling at 45.0 km/h what is the average acceleration of the car during the time it slows down?

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Yến Oanh 2 months 2021-08-21T23:04:34+00:00 1 Answers 5 views 0

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    2021-08-21T23:05:53+00:00

    Answer:

    – 0.006173 m/s²

    Step-by-step explanation:

    Given :

    Initial Velocity, u = 65km/hr = (65*1000) / 3600 = 18.056 m/s

    Final velocity, v = 45 km/ hr = (45*1000) / 3600 = 12.5 m/s

    Time at which change in velocity occurred = 15 minutes = 15 * 60 = 900 s

    Acceleration = Change in velocity with time

    Acceleration = (v – u) / t

    Acceleration = (12.5 – 18.056) / 900

    Acceleration (deceleration) = – 5.556 / 900

    Deceleration = – 0.006173 m/s²

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