Posted by James on Friday, June 1, 2012 at 10:11pm.
conservation of energy
mgh + (1/2)m(Vi)² = (1/2)m(Vf)²
2(gh + (1/2)(Vi)²) = (Vf)²
square root( 2gh +(Vi)²) = (Vf)
square root( 256.76 + 132,25) = (Vf)
square root( 389,01) = (Vf)
square root( 389,01) = (Vf)
19.7m/s = Vf
your kinetic energy is
(0.5)(0.054)(19.7)² = 10.5 J
enjoy the answer
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