A 10-kg iron ball is dropped onto a pavement from a height of 100 m. Suppose that half of the heat generated goes into warming the ball.
(a) Show that the temperature increase of the ball is 1.1°C. (The specific heat capacity of iron is 450 J/kg • °C. Use 9.8 N/kg for g.)
(b) Why is the answer the same for an iron ball of any mass?
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