Question

Which of these would have the lowest kinetic energy?

Answer 1

Answer: ice water

Explanation: Kinetic energy is the energy possessed by a substance by virtue of its motion and is directly proportional to the temperature of substance.

$K.E=\frac{3}{2}RT$

R= gas constant

T= temperature

Thus boiling water will have a temperature of around $100^0C$, ice water will have a temperature of  $0^0C$, refrigerated water will have a temperature of more than $0^0C$, and water at room temperature will have a temperature more than refrigerated water but less than boiling water.

Thus ice water has lowest temperature and thus will have lowest kinetic energy.

Answer 2

The answer is ice water, since the particles of a solid have very low kinetic energy.