Which of the following is an example of a force?

electrons moving toward a positive charge

a child kicking a soccer ball

air pushing against a falling object

all of the above

Question

Which of the following is an example of a force?
      
electrons moving toward a positive charge

      
a child kicking a soccer ball

      
air pushing against a falling object

      
all of the above

anonymous · Answer

I think all the examples are: electron motive force is another word for voltage, a force is applied to a soccer ball when it is kicked and likewise air exerts a force on a falling body - usually described as drag, air (or wind) resistance