Topic: Force and Motion
A force is any push or pull that changes or tries to change the motion of an object. The movement may be started, speeded up, or slowed down, changed in direction or stopped altogether.
Force and motion are fundamental to all matter in the universe and are integral parts of our daily
lives. A force is a push or a pull on an object that is caused by an interaction with another object.
Forces influence objects that are at rest or that are already in motion. Isaac Newton’s three laws
of motion describe how forces interact with objects to influence motion.
Some key forces include gravity, friction, and magnetism. A force
is required to do work, and generating a force requires energy. Energy can be stored as potential
energy, or it can have kinetic energy—the energy of motion. Energy can also be converted and
exchanged through energy transfer.