Posted by krag on Friday, April 20, 2012 at 6:45pm.
stopping force = -.25 * m * 9.8
F = m a
a = -.25 * 9.8 = -2.45 m/s^2
v = 2.5 - 2.45 t
so stops at t = 1.02 seconds
x = 2.5 * 1.02 + (1/2)(-2.45) (1.02)^2
x = 2.55 - 1.27 = 1.28 m
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