Acceleration 7123

The car starts to brake with an acceleration of -6.5 m/s2 and stops on the track at 45m. What were the initial speed and braking time?

Correct answer:

t =  3.721 s
v =  24.1868 m/s

Step-by-step explanation:

a=6.5 m/s2 s=45 m  s = 21   a   t2  t=2 s/a=2 45/6.5=3.721 s
v=a t=6.5 3.721=3 65=24.1868 m/s

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