Force and Motion

A force, simply put, is a push or pull on an object. In this lesson, we will look at different forces that act on objects on Earth. We will also explore how forces can be either balanced or unbalanced, and we will see how these different forces can affect the motion of an object.

Motion is the act of moving and can be observed by a change in the position of an object. The motion of an object can be described in terms of the object's speed and direction. We will observe different types of motion and the effect of forces on the motion of an object.

Newton's First Law of Motion states that an object in motion will remain in motion and an object at rest will remain at rest until it is acted on by an outside force. This principle is also referred to as inertia, and helps up understand how objects move and how their motion can be changed. We will explore the concept of inertia and how the forces of friction and gravity act on all objects on Earth.

Newton's Second Law of Motion describes the principle of acceleration - a change in the velocity of an object. We will investigate the factors that affect acceleration and will graph the acceleration of objects.

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. As we explore action and reaction, we will see that forces always occur in pairs. This law allows us to understand how objects react to applied forces.