A car starting from rest accelerates at a rate of 8 0 m/s/s. What is its final speed at the end of 40 seconda? i have no idea what is

Question

A car starting from rest accelerates at a rate of 8 0 m/s/s. What is its final speed at the end of 40 seconda?
i have no idea what is if you know the answer, can you please answer it?

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Adela 2 months 2021-07-28T20:52:38+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-07-28T20:53:43+00:00

    Answer:

    you have to organize the data. a= acceleration vi=inicial velocity vf=final velocity  t=time.

    a=80m/s

    vi=0

    vf=?

    t=40 s

    the formula you have to use is:

    vf=vi+a*t  (final velocity= inicial velocity plus acceleration times time)

    Explanation:

    I was the best one at my class, hope it helped

    0
    2021-07-28T20:54:34+00:00

    Answer: 320 m/s

    Explanation:  V initial = 0, V final= ?   Acceleration = 8m/s/s  t=40s

    So at the end of V 40 sec=  v intial + acceleration x Δt  = 0 +8m/s² x 40s  = 320m/s

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