What is Force?
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How can we get objects to move?
Pushes and pulls are called forces. You can apply a force to an object to get it to move.
Example: To move the lunch wagon or to stop it from moving, we have to use both push & pull.
Pushes and pulls are called forces. You can apply a force to an object to get it to move.
Example: To move the lunch wagon or to stop it from moving, we have to use both push & pull.
Check out the video below that explores Force!
A push or pull will bring an object to a stop. Remember pushes and pulls are forces. So to bring an object to stop we would have to apply a force.
Applying a push or a pull can change the motion of an object. The change can be from no motion to moving, or from moving to no motion. More force in the direction of travel will make the wagon go faster. A small push or pull in opposition to the direction of travel will slow the wagon a bit.
Applying a push or a pull can change the motion of an object. The change can be from no motion to moving, or from moving to no motion. More force in the direction of travel will make the wagon go faster. A small push or pull in opposition to the direction of travel will slow the wagon a bit.
What is Motion?
Think about a ball in motion... How can we change it's motion?
Speed is a way to describe motion. You can change the motion of a ball by making it move faster or slower. You can apply a force to change the speed of the ball's motion. We can make the ball go faster or slower or stop.
What other ways can the motion of a ball change?
Speed is a way to describe motion. You can change the motion of a ball by making it move faster or slower. You can apply a force to change the speed of the ball's motion. We can make the ball go faster or slower or stop.
What other ways can the motion of a ball change?
Change of motion of an object is the result of a force applied to the object. Forces cause change of motion. Motion does not change by itself. Force changes motion.
Motion of an object changes only when a force is applied to the object.
Motion of an object changes only when a force is applied to the object.
What is Gravity?
Force & Motion Vocabulary
Below are vocabulary terms you should know and understand for this unit!
Who is Sir Isaac Newton?
What Does He Have To Do With Force & Motion?
Sir Isaac Newton is listed as one of the greatest mathematicians and scientist of his time. He was born in England on December 25, 1643. He lived for 85 years.
*Fun Fact: He was born the same year that Galileo died.
While Newton was in college he was writing his ideas in a journal. Newton had new ideas about motion, which he called his three laws of motion. He also had ideas about gravity, the diffraction of light, and forces.
Newton's ideas were so good that Queen Anne knighted him in 1705. His accomplishments laid the foundations for modern science and revolutionized the world.
Newton's First Law: "Law of Inertia"
According to Newton's first law...
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Check out the following video on the "Law of Inertia" by clicking on the link below....

Newton's 2nd Law: "Law of Acceleration"
According to Newton's second law...
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
What does this mean?
Essentially, heavier objects require more force to move the same distance as lighter objects.
Essentially, heavier objects require more force to move the same distance as lighter objects.
The Second Law gives us an exact relationship between force, mass, and acceleration. It can be expressed as a mathematical equation:
FORCE = MASS times ACCELERATION
FORCE = MASS times ACCELERATION
Click Here For a Study Jams Video About Newton's 2nd Law of Motion!!!!
Newton's Third Law
For every action, there is an equal and opposite reaction