Physics calculation is a field of science that involves the use of mathematics to solve problems related to physical phenomena. The two crossword solutions for the term 'physics calculation' are 'MASS' and 'centerofgravity'. MASS is a measure of the amount of matter in an object, and is typically measured in kilograms or grams. Centerofgravity is the point at which the MASS of an object is evenly distributed, and is used to calculate the force of gravity on an object.