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Forces

 

Force: A force is a push or a pull. Forces are measured inNewtons. Did you know that forces only exist when objects interact? It is true.

 

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A force can change the energy of an object. Whenever two objects touch, forces are involved. In fact according to Newton’s Third Law, the bat and the ball will push against each other with equal forces.

 

 

A force can cause acceleration, a change in direction or deceleration. A force is NOT required to keep an object in motion.

 

Examples of Some Forces

The Following Are NOT FORCES

Some Contact Forces

Some Forces that act at a distance

Mass

Friction opposes motion.

Magnetism

Inertia

Drag (air resistance)

Gravity

Speed

Weight (weight = mass x gravity)

 

Acceleration

Centripetal Force

 

Velocity

Thrust (A spinning propeller moves a plane)

 

 

 

 

 

 

 

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