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.





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