Science Appetizer
Newton’s laws of Motion
Newton’s First Law of Motion
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.
This law is often called:
“The Law of Inertia".
A
What is a force?
force is a push or a pull. A force can
give energy to an object causing the object
to start moving, stop moving, or change its
motion.
Forces occur in pairs and can be either
balanced or unbalanced.
Lets check out this website. Forces
 Inertia
What is Inertia?
is the idea that an object keeps moving or
stays still unless acted upon by an outside force.
 What are some forces that might act on a Frisbee
that has been thrown that will keep it from moving
forward forever?
 Gravity
 Fluid Friction or Air Friction
 A Solid Object in Its Path
What are examples that Demonstrate
Newton’s First law?
 Demonstration 1: Book and paper
 Demonstration 2: Frisbee (Still/Thrown)
 Demonstration 3: Probe in
Space
 Demonstration 4: A Planet’s Rotation Around
the Sun.
 Animated Demonstration: CrashTube
Newton’s Second Law of Motion
 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).
 The Formula for Newton’s Second Law is Force =
(Mass) (Acceleration) or F=MA
 What does that mean? Here is an example.
What is Acceleration?
 Definition
 What are
some objects of greater mass? Lesser
mass?
 Greater: boulder, vehicle, mountain,
elephant, adult
 Lesser: Cat, dog, pebble, feather, small child
What are examples that Demonstrate
Newton’s Second law?
 Demonstration 1: Paper Boxes
 Demonstration 2: Car vs. Semi
 Demonstration 3: Move Mr. Adams
 Demonstration 4: Tubeman
 Demonstration 5: Paper Air Plane Distance Contest
 Launcher Activity: Which goes further: a Tennis Ball,
a
Baseball, or a Steel Boule. Distance Measurement Sheet
Newton’s Third Law of Motion
 For
every action there is an equal and opposite
reaction. (re-action)
 Action vs. Reaction
 The Starting motion or force vs the resulting
movement aka the result of the force.
 Examples of Action/Reaction
 Push a box/Box moves
 Rocket fires/rocket moves
What are examples that Demonstrate
Newton’s Third law?
 Demonstration 1:
Skateboard
 Demonstration 2: Boatman jump
 Demonstration 3: Rockets
 Demonstration 4: Stomp Rockets
 Demonstration 5: Balloon Rockets
 Milk Carton Water Wheel Activity
Water Rocket Activity:
Combining
the
Laws
 How does a water rocket demonstrate each of Newton’s Laws of
motion?
 Newton's First Law:
 Newton’s Second Law:
 Newton's Third Law:
 Perform Water Rocket Experiment
 Chart, measurements, and calculations.
 Water Rocket Data Sheet
 Water Rocket Questions