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19 April, 08:59

An automobile accelerates 1.77 m/s2 over 6.00 s to reach freeway speed at the end of an

entrance ramp. If the car's final speed is 24.44 m/s, what was its initial speed when it

began accelerating?

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Answers (1)
  1. 19 April, 09:03
    0
    Startinfg speed is 13.82 m/s

    Explanation:

    Use equation for realtion between start and final speed:

    Vf=Vs+a*t

    Vf-final speed

    Vs-start speed

    Vf=24.44m/s

    a=1.77m/s² (acceleration)

    t=6.00s (Time)

    Vf=Vs+a*t

    Vs=a*t-Vf

    Vs=1.77m/s²*6s-24.44m/s

    Vs=-13.82m/s
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