Newton's Third Law of Motion is that all forces operate in equal pairs that move in opposite directions. This is often summarized as "for every action, there is an equal and opposite reaction."
This law means that when one object exerts force on another, the same amount of force is exerted on the initial object, but in the opposite reaction. For example, when a billiard ball strikes another ball, the second ball is propelled forward. Simultaneously, the momentum of the first ball is slowed or stopped by opposing force. The amount that the first object is affected by the opposing force depends on the mass and motion of the second object.Learn More
The SI unit for force is the newton with the symbol N. Some other SI units related to force are the meter for length, kilogram for mass and second for time.Full Answer >
As the height of an object triples, the potential energy of said object also triples. Potential energy is directly related to an object’s height and increases or decreases linearly as the height of the object increases or decreases.Full Answer >
A pulley is a simple tool that can be used for many things, such as lifting heavy objects or to change the direction of applied forces for various means. A pulley is a very simple tool that consists of a wheel on a fixed axle that has grooves for keeping a rope or wire in place. This makes pulleys useful for lifting heavy objects using applied human force.Full Answer >
Oil is less dense than water. This can be seen when water is poured into a container with oil, in which case the water sinks to the bottom, and the oil stays on top.Full Answer >