Washington DC Standards
DC.5.6. Physical Science: Broad Concept: Unbalanced forces cause changes in velocity. As a basis for understanding this concept, students:
5.6.2. Demonstrate that if the forces acting on an object are balanced so that the net force is zero, the object will remain at rest if it is initially at rest or will maintain constant speed and direction if it is initially moving.
5.6.5. Investigate and describe that the greater the net force 'F' applied to a body, the greater its acceleration 'a'. Describe that the greater the mass 'm' of an object, the smaller the acceleration produced by a given force.
5.6.6. Demonstrate and explain that things on or near Earth are pulled toward Earth's center by the gravitational force the Earth exerts on them.