What are two effects that forces can have on motion?
inertia and gravitational pull
What is two or more equal forces whose effects cancel each other out and do not change the motion of an object?
How do balanced forces acting an object affect its motion how do unbalanced forces acting on an object affect it's motion?
Nothing! If the two forces are equal and opposite then they will cancel each other out. What will happen next is described in Newton's First law when it says "An object in motion will stay in motion unless acted upon by an outside force". Two equal and opposite forces have the same effect as no force, therefore the object's motion will remain the same as if it had never been acted upon by the two…