A push or pull

        Described by its magnitude and by the direction (must be a vector)

    Combining Forces

    If the forces are in the same direction magnitudes are added
 

    If the forces are in opposition direction magnitudes are subtracted
 
 

    Balanced/ Unbalanced  
 
    Based on Newton’s first law
            Object in motion stays in motion.
 

            Object at rest stays at rest

    A force must be applied for an object to be unbalanced
            starts a object to move
            stops a object
            or changes direction