Unit 4: Contact Forces Vocabulary Word

Vocabulary

Energy

The ablity to do work or cause change.

The Law of Conservation of Energy

States that energy can neither be destryed-onlytransformed from one form to another.

Kinetic Energy

the energy something has when it’s moving; mechanical energy 

Mechanical Energy

the energy that lets something move or do work

Potential energy

the energy an object has because of its position. In other words,  energy that’s ready to be used when something happens; stored energy

Velocity

the speed and direction of an object in motion; distance traveled per unit time in one direction

Mass

The amount of matter in an object

Weight

The force acting on an object due to gravity

Inverse

Oppisote of

Proportional

two quantities are related in a way that when one changes the other one also changes the other one also changes in the same way; When ne increases the other increases

Forces

a push or a pull on something that makes it move, change direction, or even change its shape

Contact force

any force (push or pull) that occurs as a result of two objects touching each other

Collision

when two or more objects come into contact and exert a force on each other for a short period of time

Deform

The change in shape or size of an object because of applied physical forces

Friction

a force that works against the motion of an object, slowing it down or stopping it completely

Gravity

Gravity is an invisible force that pulls everything toward the ground, including you; it also pulls objects toward each other.

Inertia

the tendency of an object to resist a change in its motion unless acted upon by an external or unbalanced force