Posted by Addie on Wednesday, May 11, 2011 at 11:59am.
Vf^2 = Vo^2 + 2ad = 0.
(150)^2 + 2a*3.5 = 0,
22500 + 7a = 0,
a = -3214.3m/s^2.
Vf = Vo + at = 0.
Solve for t and get:
t=(Vf-Vo)/a = (0-150) / -3214.3 = 0.0467s.
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