A 54kg ice skater moving at 6.4m/s glides to a stop. Assuming the ice is at 0deg C and that 50% of the heat generated byfriction is absorbed by the ice, how much ice melts?

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Nathalie Redfern · Accepted Answer

go to the 5th edition of the book then go to chapter 14 then go to problem number 30 the answers is there different edition, but same problem 2. Given, Mass of ice cube (m) = 54.0 kg Velocity of ice cube (v) = 6.4 m/s Temperature of ice cube (T) = 0oC Latent heat of fusion (L) = 3.33×105 J/kg We know that, KE=1/2mv2=1(54kg)(6.4m/s)2 2 = 1105.92 J Since, KE= Q andQ = mL According to question 50 percent of energy is absorbed byice. Then, Q=m ice melt L2 or, mice melt=Q 2L =kg =0.00166 kg =1.7 g Therefore, the amount of ice melt was 1.7 g (ml).

A 54kg ice skater moving at 6.4m/s glides to a stop. Assuming the ice is at 0deg C and that 50% of the heat generated byfriction is absorbed by the ice, how much ice melts?

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