Vocabulary # 1

Vocabulary #1

Forces and Newton's Laws

 Force :   A push or pull exterted by one object on another.

Force is used everyday life.

 

 Friction : A force that opposes the motion of an object in contac with a surface .

Friction is the force between two surfaces rubbing together .

Drag Force :  A force is the opposes the motion of an object through a liquid or gas

When object are moved through gas, liquid or air is calles drag force . 

Gravity : A force of attraction the exists between all objects with mass .

Gravity pulls a person  toward the earth.

Net force: The combined effect of all the forces acting on an object .

Scientist say that the net force is zero.

Blanced Force : Forces the cancel each other our when acting together on a single object.

Two teams of same force trying to move a flag are called balanced force .

Unbalanced Force : Forces that do not cancel each other out when acting together on a single object.

Two teams of diferrent forces trying to move a flag are called unbalanced force .

Inertia  : The tendency of an object to oppose a change in motion.  

On a bus when driver steps on the brakes , passengers will continue moving forward because of the inertia .

Momentum : The mass of an object multiplied by its velocity .

Momentum is the mass of ana object multiplies by its velocity said teacher Ramon.