Answer to Question #22106 in Mechanics | Relativity for mohamed
(a) What is the kinetic energy of the ice as it reaches the ground?
(b) What is its speed as it reaches the ground?
U + T = const
T - kinetic energy
U - potential energy
T = m*v^2/2
U = m*g*h
a) T = m*g*h = 15*8*10 =1200 J
b) v = Sqrt[2T/m]=Sqrt[2*1200/15] = 4*Sqrt m/s = 12.6 m/s
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