What is the ability of the body to function successfully and efficiently during physical activity?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

What is the single most important equation in all of physics?