Vocabulary No.2 ENERGY

Potential Energy:  energy stared in an object of material

Gravitational Potential Energy: the potential energy of an object located above the ground

Kinetic Energy:  energy of a moving object

Work: force applied to an object times the distance the object moves

Vocabulary No.3 Simple Machine

Simple Machine: a device with few parts that males it easier to do work

Effort Force: the force applied to machine

Resistanced Force: the force that a machine acts against

Lever: a simple machine made of a rigid bar on a pivot point

Fulcrum: the pivot point of a lever

Mechanical Advantage: the nomber of a times a machine multiplies the force applied

Pulley: a grooved wheel that turns by the action of a rope in the groove

Wheel and Axel: simple machine made of handle or axis attached to the center of a wheel

Vocabulary No.1 Newton`s Law

FORCE: push or pull exerted by one object by another

 
 
Friction: force that opposes the motion of an object in contact with a surface

 
 
 
 
 
 
 
 
 
Drag Force: force that opposes the motion, of an object through a liquid or gas

 
 
 
 
 
 
 
 
Gravity: force of atraction that exist between all object with mass

Net Force: the combinated effects of all the force acting on an object

Balanced Force: force that cancel each other out when acting together in a singular object

Unbalaced Force: force that do not cancel each other out when acting together in a singular object

Inertia: the tendency of an object to opposes a change in motion

Momentum: the mass of an object multiplied by its velocity