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A rock of mass 0.354 kg falls from rest from a height of 25.0 m into...

A rock of mass 0.354 kg falls from rest from a height of 25.0 m into a pail containing 0.438 kg of water. The rock and water have the same initial temperature. The specific heat capacity of the rock is 1880 J/kg C°. Ignore the heat absorbed by the pail itself, and determine the rise in temperature of the rock and water in Celsius degrees.

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Answer #1

Here,

Potential energy of rock is,

E= mgh

Then,

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