21. What is the kinetic energy of a skydiver with a mass of 135kg and a velocity of 55.56m/s?

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

Contains chemical energy. a. heat b. light c. natural gas

The first law of thermodynamics is as follows: ∆u=q-w , which means in a system is equal to added, minus done by the system. the units for these variables are in .