Posted by Anonymous on Friday, February 8, 2013 at 8:46am.
Assuming 84mi/h.
Vo=84mi/h * 1600m/mi * 1h/3600s=37.3 m/s.
F = m*a.
a = F/m = -500/2000 = -0.25
V = Vo + at.
t = (V-Vo)/a = (0- 37.3)/-0.25 = 149.2s
Required to bring car to rest.
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