Sci Warm-Up: Reading Trivia!

Answer the following 3 questions with your team and win a fabulous prize! Use your reading to help you find the

answers…

What are Newton’s 3 Laws of Motion?

If you drop a hammer and a feather on the moon, which will land first?

Why do astronauts float in space?WRITE YOUR ANSWERS ON A PIECE OF PAPER!

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Newton’s 3 Laws of Motion

Thought Experiments…

Newton’s 1st Law, Part I

Part I: When the forces acting upon an object are balanced, meaning the net force is zero, objects at rest (not moving) stay at rest.

Newton’s 1st Law, Part II

Part II: When the forces acting upon an object in motion are balanced (the net force is zero), the object will continue moving in a straight line at a constant speed.

Newton’s 1st Law is also known as the “Law of Inertia”.

Inertia = the tendency of an object to resist any change in its motion.

Galileo’s Thought Experiment:

Newton’s 1st Law Thought Experiment #1

Newton’s 1st Law Thought Experiment #2

Newton’s 2nd Law of Motion

If an object experiences unbalanced forces, (a “net” force), it will change velocity, (accelerate).

The acceleration (a) of an object varies directly with the net force (F) acting on it and varies inversely to it’s mass (m).

acceleration = Force mass

In other words….

F = m*a

Newton’s 2nd Law of Motion

Newton’s 2nd Law of Motion Thought Experiment #1

Newton’s 2nd Law of Motion Thought Experiment #2

Newton’s 3rd Law

When two objects interact, each object experiences a force from the other object. The forces in this pair are equal in size and opposite in direction.

Newton’s 3rd Law Thought Experiment #1

Newton’s 3rd Law Thought Experiment #2