Newton’s Laws of Motion - Weebly



Newton’s Laws of Motion

Date: December 17, 2012 Grade/Level: ANY

Subject: Science Time: 60mins No. of Students: 15

Objectives: *Describe and state Newton’s three laws of motion.

*Apply one the three law’s to one of the three scenarios with Santa.

Content Standards:

Science California Content Standards – Physical Science

2/3- 1b. Students know a objects motion can be described by recording the change in the position of the object over time.

4/5- 6d. Conduct multiple trials to test a predication and draw a conclusion about the relationships between prediction and results.

TPE # 5: Student Engagement- Model effective communication skills (i.e. grammar, spelling, handwriting, vocabulary, rate of speech, and voice quality). Ensure the students understand what they are to do during instruction.

Materials:

*Santa Scenarios *pen or pencil

Anticipatory Set:

Conduct Standards: Respect yourself, Respect others, and Respect community. I want to remind everyone how important this is and that we need to remember the classroom rules everyday.

Transfer:

*Were going to finish our Christmas trees. You will be able to take them home and watch them grow.

*Remind students that we have been practicing the steps of the scientific method and how to complete an experiment properly.

Motivation: “We are going to test Newton’s Laws of Motion over the next couple weeks. Has anyone ever heard of Newton’s Law of Motion? “

Content Background: See Newtons Law/Issac Newton

Instruction: (15mins)

- Crystal trees= Explain to students about crystallization forming on their trees.

- On white board= Discuss Newtons law and give examples. Check for understanding. Have students work in pairs to think of another example for each Law.

Write Scenarios on board while students are working in pairs:

Scenario 1

One foggy Christmas Eve, Santa's sleigh was so heavily laden with gifts for the good little boys and girls of __________ (fill in the name of your town/city) that the jolly old fellow had to employ his reserve reindeer, Clyde and Bubba, to assist the other eight members of his team. It took the combined force of the ten powerful animals to pull Santa's sleigh up into the starlit sky.

Scenario 2

As Santa's sleigh was pulled forward, faster and higher, a little stuffed brown bear fell undetected off the back of the sleigh. Some little child is going to be very disappointed.

Scenario 3

Fortunately for __________'s (fill in the name of your town/city) youth, the Santa and hi team arrived on time. Spying the first housetop, Santa maneuvered his team for a landing. Unbeknownst to him, the children who lived there had left a treat on the roof for Santa's reindeer. The reindeer saw the treat and raced as fast as they could for the yummy oats and berries. They glided in, then they stopped so quickly that Santa flew forward and bumped his head on the front of the sleigh. Obviously, he had forgotten to fasten his seat belt!

Assessment

This activity can be used as reinforcement or as a "ticket-out-the-door" type of activity.

ANSWERS:

Scenario 1: Newton's Second Law: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Scenario 2: Newton's Third Law: For every action, there is an equal and opposite reaction.

Scenario 3: Newton's First Law: An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by

Newton’s Law

  Sir Isaac Newton was one of the greatest scientists and mathematicians that ever lived. He was born in England on December 25, 1643. He was born the same year that Galileo died. He lived for 85 years. Isaac Newton was raised by his grandmother. He attended Free Grammar School and then went on to Trinity College Cambridge. Newton worked his way through college. While at college he became interested in math, physics, and astronomy. Newton received both a bachelors and masters degree.

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. Sir Isaac Newton died in 1727.

Newtons 1st 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. 
This law is often called 
"the law of inertia".

What does this mean? 
 This means that there is a natural tendency of objects to keep on doing what they're doing. All objects resist changes in their state of motion. In the absence of an unbalanced force, an object in motion will maintain this state of motion.

Newtons 2nd 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? Everyone unconsiously knows the Second Law. Everyone knows that heavier objects require more force to move the same distance as lighter objects.

Newtons 3rd Law: For every action there is an equal and opposite re-action. 



What does this mean?  
This means that for every force there is a reaction force that is equal in size, but opposite in direction. That is to say that whenever an object pushes another object it gets pushed back in the opposite direction equally hard. 

Quiz: If extra time.

1. Who was the scientist who gave us the Laws of Motion?

2. How many Laws of Motion are there?

3. What is another name for the first law of motion?

4. Which law explains why we need to wear seatbelts?

5. Which law says that force is equal to mass times acceleration (F=MA)?

6. Which law says that heavier objects require more force than lighter objects to move or accelerate them?

7. Which law explains how rockets are launched into space?

8. Which law says that for every action there is an equal and opposite reaction?

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