Lesson: Forces and Motion

What are Forces?

A force is a push or pull on an object that can cause it to accelerate. Forces can be caused by a variety of things, such as gravity, friction, or applied forces.

Newton's Laws of Motion

Sir Isaac Newton's Three Laws of Motion describe the relationship between a body and the forces acting on it.

Types of Forces

There are many types of forces, including:

Interactive Demo: Motion Under a Force

Click the button below to apply a force on the object and see it accelerate based on Newton's Second Law (F = ma).


Quiz: Test Your Knowledge

1. What does Newton's First Law of Motion state?




2. What is the formula for Newton's Second Law of Motion?




3. What force opposes the motion of objects sliding against each other?




4. According to Newton's Third Law of Motion, what happens when you push an object?




5. What is the force that pulls objects toward the center of the Earth?




6. What type of force is responsible for an object moving when you push it?




7. What is the term for an object's resistance to changes in its motion?




8. What is the force that holds an object against a surface?




9. Which law explains why you move forward in a car when it suddenly stops?




10. What happens to an object when a force is applied to it?