A car travelling at 30 ms’ decelerates to 10 m sin a distance of 20 m. What is the deceleration of the motion, in m s?

Question

A car travelling at 30 ms’ decelerates
to 10 m sin a distance of 20 m. What
is the deceleration of the motion, in m
s?

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Jezebel 6 months 2021-07-22T02:06:18+00:00 1 Answers 3 views 0

Answers ( )

    0
    2021-07-22T02:07:40+00:00

    Answer:

    V²=U² + 2as

    Where V=Final Velocity

    U=Initial Velocity

    a=acceleration ( Deceleration in this case)

    s=distance covered

    10² = 30² + 2(a)(20)

    100 = 900 + 40a

    100 – 900 = 40a

    -800=40a

    a= -800/40

    a= -20ms-².

    Its negative because the car Decelerated.

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