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posted by Anonymous Saturday, January 19, 2013 at 1:37pm.
Calcu[ate the weight of a body in lb if it has a kinetic energy of 38.6 ft-Ib when moving at 19.5 mi/h
19.5 miles/h = 28.6 ft/s (1/2) M V^2 = (M/2*818) ft^2/s^2 = 38.6 ft-lb M = 0.0944 slugs = 3.04 lb mass
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