Newton's third law says that for every action, there is a an equal and opposite reaction. When two object's interact, a force acts on both objects. When a cannon fires, the cannon ball pushes off of the cannon, and the cannon pushes off of the cannon ball. When the cannon ball flies out of the cannon, a force pushes back on the cannon and it recoils.
Newton's Third law
Explain:
Newton's third law says that for every action, there is a an equal and opposite reaction. When two object's interact, a force acts on both objects. When a cannon fires, the cannon ball pushes off of the cannon, and the cannon pushes off of the cannon ball. When the cannon ball flies out of the cannon, a force pushes back on the cannon and it recoils.Other Topic:
Source:
http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l4a.htmlhttp://www.grc.nasa.gov/WWW/K-12/airplane/newton3.html