Zeke’s car had an initial velocity os 12 m/sec slows down to 2 m/sec in 4.5 seconds. What is the acceleration of Zeke’s car? *

Question

Zeke’s car had an initial velocity os 12 m/sec slows down to 2 m/sec in 4.5 seconds. What is the acceleration of Zeke’s car? *

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Thu Hương 2 months 2021-07-30T08:02:13+00:00 1 Answers 0 views 0

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    2021-07-30T08:03:46+00:00

    Answer:

    a=-2.22m/s^2

    Explanation:

    the information we have is:

    initial velocity: v_{i}=12m/s

    final velocity: v_{f}=2m/s

    and the time: t=4.5s

    We need to find the acceleration of the car.

    For this we use formula to calculate the acceleration given the information we were given:

    a=\frac{v_{f}-v_{i}}{t}

    acceleration is equal to the difference between the final velocity and the initial velocity divided by time.

    We substitute all the known values:

    a=\frac{2m/s-12m/s}{4.5s}\\ \\a=\frac{-10m/s}{4.5s}\\ \\a=-2.22m/s^2

    the acceleration is -2.22m/s^2

    the result is negative because the car is slowing down.

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