Forces

                                                                   Forces

What is a force?

A force is The push or pull on an object with mass causes it to change its velocity. Force is an external agent capable of changing a body's state of rest or motions It has a magnitude and a directions. They are measured in Newtons.

    types of force ...

• Gravitational force.-  a force of attraction (attractive force) that attracts all physical forms having mass
• Non-contact forces- they pull or push on objects without touching them
• Magnetic force.- attraction or repulsion that arises between electrically charged particles because of their motion
• Nuclear force.- a force that acts between the protons and neutrons of atoms.
• Frictional force.- the force that resists motion when the surface of one object comes in contact with the surface of another
• 
  Frictional force.- the force that resists motion when the surface of one object comes in contact with the surface of another

        

   Examples of Forces ...  

• weight force (i.e. the weight of something)
• the force of a bat on the ball.
• the force of the hair brush on hair when it is being brushed.
• the force of your foot pushing on the pedal when you ride your bike.

A force is a push or a pull. When the wind pushes a sailboat through the water, it is exerting a force. When gravity pulls an apple toward the ground, that is a force as well. Forces can make things move, change their speed, or change their shape.