1. when two forces applied on an object are equal and opposite, then these forces
a) May move the object b) May stop the moving object
c) may move the object and cause a change in its shape
d) do not move the object but may cause a change in its shape.
I think it's b. If the forces are equal and opposite it either makes the object move at a constant speed or makes it stop. I don't think that it will change it's shape though.