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Newton’s Laws of Motion
Richard Allen
Rick Muñoz
Claudia Aguirre
Who was Newton?
• Newton was born December 25, 1643 the same
day that Galileo died. He died aged 85 in 1727
• Newton was raised by his grandmother and
studied Math, Physics, and Astronomy Trinity
College Cambridge where he received both his
Master’s and Bachelor’s degree.
Newton Continued…
• In college, Newton jotted his ideas (which
became the three laws of motion) in his journal.
He also had ideas about gravity, the diffraction
of light, and forces.
Today’s Objective
• Students will be able to fully understand
Newton’s three laws of motion in order to
successfully play an educational physics video
game.
Newton’s First Law
• Law I: Every body persists in the state of rest or
moving uniformly straight, except when it is
compelled to change its state by the force
impressed upon it. This is called Inertia.
• Galileo actually discovered inertia, but Newton
rephrased it.
DUDE
YOU
THIEF!
YOU’RE
JUST
JEALOUS.
What does this mean?
• An object would remain in constant motion if it
was for a force not to act against it.
• Friction, air particles, gravity and other forces
act against objects on earth causing them to not
remain in motion forever.
Law I Example
• A skateboarder who pushes off his skate board
for the first time will move in the direction it was
pushed.
Explanation
• Rolling the ball on the ground…it moves but
eventually it stops because of the friction that is
acting on it…
Newton’s Second Law
• Acceleration is produced when a force acts on a
mass. The greater the mass (of the object being
moved) the greater the amount of force needed
(to accelerate the object). Force is equal to mass
times acceleration.
What does this mean?
• Essentially heavier objects require more force to
move the same distance than lighter objects.
Law II Example
• It takes way more force to throw a bowling ball
the same distance it does to throw a tennis ball.
Newton’s Third Law
• To every action there is always an equal and
opposite reaction.
What does this mean?
• This means that for every force there is a
reaction force that is equal in size, but opposite
in direction. So whenever an object pushes
another object it gets pushed back in the
opposite direction equally as hard.
Law III Example
• Let’s use a pogo stick as an example. When you
jump hard on a pogo stick the stick spring goes
down. The ground pushes back up with equal
force and you bounce up again.
Sources
• http://teachertech.rice.edu/Participants/louvier
e/Newton/index.html
• Khan Academy you tube videos
• http://youtu.be/By-ggTfeuJU
• http://youtu.be/ou9YMWlJgkE
• http://youtu.be/CQYELiTtUs8
• Crayon Physics Game
• Clipart