Homework Help: physics

Posted by Nick on Sunday, December 16, 2007 at 8:37pm.

a 75kg skater is travelling at 15m/s stops suddenly on the ice. If the ice is at 0 degrees and it is assumed that all of the skaters energy is converted to heat, how much ice does he melt? (latent heat of fusion for water is 3.3x10^5 J/kg)

physics - drwls, Monday, December 17, 2007 at 1:00am
Assume all of the kinetic energy,
(1/2) M V^2 = 8438 J, is used to melt the ice. Divide that energy by the latent heat of fusion, 3.3x10^5 J/kg. The answer will be in kg.
physics - Anonymous, Saturday, April 16, 2011 at 6:14am
0,02556818182kg

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