Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and causes it to slo

Question

Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and causes it to slow to a stop. How long does it take for the car to stop? Round your answer to the nearest tenth.

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Nem 3 years 2021-07-25T12:56:40+00:00 2 Answers 0 views 0

Answers ( )

  1. Acacia
    0
    2021-07-25T12:57:46+00:00
    Reply

    Answer:

    4.4

    Explanation:

    i got it correct

  2. thachthao
    0
    2021-07-25T12:57:54+00:00
    Reply

    Answer:

    4.4 seconds

    Explanation:

    use the equation

    v(final)=v(initial)+a(t)

    what we know:

    v(initial)=28mps

    v(final)=0 because it comes to a stop

    a= -6.4    it is negative because the 6.4 is resisting forward motion

    using these you get

    0= 28 + (-6.4)t

    6.4(t)=28

    t=4.375 sec

    and with rounding

    t=4.4 sec

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