Labels:monitor | web site | window OCR: Physical Change Any change in a natural system that can be measured Position: An object's location relative to some coordinate system Potential Energy The stored energy an obiecthas due to its relative position with respectto other objects. Power The rate that energy is used or stored Pressure The force per unit area acting on surface Projectile Any object that is moving underthe influence of its own inertia and which is subject toa gravitational force such cannor shot. systerm respect under infiuence