Identify and describe the types of forces acting on an object in motion, at rest, floating/sinking (type of force, direction, amount of force in Newtons)
Compare the forces acting on an object by using a spring scale to measure them to the nearest Newton
Recognize every object exerts a gravitational force of attraction on every other object
Recognize an object's weight is a measure of the gravitational force of a planet/moon acting on that object
Compare the amount of gravitational force acting between objects (which is dependent upon their masses and the distance between them)
Compare the effects of balanced and unbalanced forces (magnetic, gravity, friction, push or pull) on an object's motion
Explain that when forces (magnetic, gravity, friction, push or pull) are balanced, objects are at rest or their motion remains constant
Explain that a change in motion is the result of an unbalanced force acting upon an object