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Newton's Laws of Motion
Transcript of 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".
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.
This law gives us an exact relationship between force, mass & acceleration.
Can be mathematically expressed as:
F = MA
where F = Force
M = Mass
A = Acceleration
Example of Newton's 1st Law
Example of Newton's 2nd Law
Sir Isaac Newton
One of the greatest scientist & mathematicians that ever lived. He was the first scientist who clearly stated the laws of motion and published them in 1687 in his "Mathematical Principles of Natural Philosophy".
ISAAC NEWTON (1642-1727)
Instruction: Draw and arrow to connect the following statements in each number to its correct Newton's Laws of Motion
1. If air is let out of a balloon quickly Newton's 3rd Law
air pushes down & balloon goes up.
2.12 lb bowling ball goes faster down Newton's 2nd Law
the lane than a 15 lb bowling ball.
3. Someone crashes their bike into a Newton's 1st Law
rock & is thrown over it to the ground.
4. It takes less force to move a DVD than Newton's 1s Law
a DVD player.
5. In a plane taking off you feel pushed Newton's 2nd Law
back into your seat.
Research and answer the following questions:
1. What is work?
2. What energy?
3. How are work, energy, and power related?
Newton's Laws of Motion
Many other scientist before Newton contributed to the foundations of mechanics, including Copernicus, Brahe, Kepler, & especially Galileo Galilei who died the same year Newton was born. Indeed, Newton himself said, "If I have been able to see a little farther than other men, it is because I have stood on the shoulder of giants".
Instruction: Group yourselves into four, then answer the problem given that is inside the envelope. Pick one member from the group to read the problem and explain the answer in front of the class.
Newton's Third Law of Motion
"For every action there is equal and opposite reaction."
Newton's Laws of Motion will help us clearly understood how the physical world works. Along the way, we've developed a set of "common sense" ideas that don't stand up to logical analysis. His laws will let us realize how to adjust our understanding of the physical world to make it consistent with what experiments tell us.