Motion and Energy, Forces, Forces and Fluids. Motion and Speed.
Day 1 Forces and Motion - Cabarrus County Schools
Transcript of Day 1 Forces and Motion - Cabarrus County Schools
November 29, 2018
Day 1
Forces and
Motion
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*What is Force?
*What is inertia?
*What is Friction?
Essential Question
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On the left hand side cut out and glue downthese vocabulary words. (Only cut the dotted Lines)
Example:
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What is ForceIn order for any object to be set in motion it needs force. A force is a push or a pull that acts on an object.
Objects with more mass are harder to move, which means you must apply more force. The mass of an object tends to make the object resist being set into motion. In order to move an object you must use a force and overcome the objects inertia. Inertia: The tendency of an object to resist a change in its state of motion.
*Force is a push or a pull*More mass harder to move and you need more force.*Inertia is the tendency of an object to resist a change.
KEY WORDS: FORCE = PUSH or PULL INERTIA = RESIST CHANGE
NOTES:
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If you were to drop a ball or roll a ball the ball will never go higher than its original start point, unless you apply force to the ball first. Also once an object is set in motion it will move forever in a straight line and a constant speed unless a force is acted on it. Just as it takes force to set an object in motion, it also takes a force to slow or stop an object.
*An object will never bounce or roll higher than it's original starting point unless a force is applied.*Object will move at a constant speed in a straight line unless a force acts upon it.*Takes force to stop an object .
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Galileo was the 1st to test this theory.
Inertia vs. Motion
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In order to slow down or stop and object from moving you must apply a force. Any force that acts on an object that is moving is called Friction. Friction is a force that opposes the motion of one object moving past another.
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*Friction is a FORCE*Friction opposes the motion of one object past another
KEY WORDS: FRICTION = STOP or SLOW
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What is Friction
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Well when you combine the idea of inertia, friction and force you get Newton's First Law of Motion. Newton's First Law of Motion states that objects at rest remain at rest and objects moving at a steady rate stay that way until a force acts on them. Sir Isaac Newton was the first person to publish a complete description of inertia.
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Force, Inertia, & Friction
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Domino Challenge Lab Sheet Experiment
*Follow the Directions and complete the Domino Challenge Lab Sheet
Watch this after the Experiment as a Review:
Day 2
Inertia at Work
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Forces and
Motion
Day 3
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* What is Acceleration?
* How do you determine an objects velocity?
* What is speed?
Essential Question
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You know that you are moving because you are changing position. Position is the location of an object. The position of any object on a map is a comparison of the object's location to the things around it.
We can look at an objects motion by looking at an objects change in position. The position can be measured as the distance an object has traveled from it's original starting spot.
*Position is the location of an object
NOTES:
What is Position
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Speed is how fast an objects position is changing with time at any moment. Speed can be found by dividing the distance an object traveled by it's travel time.
S
Glue This
Side Down
S(Speed)
D(Distance Traveled)
T(Time)-(Divided by)
*Speed is how fast an objects position is changing*Speed can be found by dividing distance by time.
KEY WORDS: SPEED = FAST POSITION IS CHANGING
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What is Speed
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Velocity is the speed of a moving object taken with it's direction of travel. So in order to determine an objects velocity you need to know 2 things. You need to know the speed of the object and the direction in which the object is traveling
*Velocity is the speed of an object taken with it's direction*In order to determine velocity you need to know the Speed and Direction*Only way to have same velocity is to go at the same speed and direction
KEY WORDS: VELOCITY = SPEED and DIRECTION
Objects can have the same speed but have different velocities. Objects can travel in the same direction but have different velocities. The only way two objects can have the same velocity is if they are going the same speed and the same direction.
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What is Velocity
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Newton's 1st law states that an objects velocity will not change unless a force is applied to it. So what happens if a force is applied? How could a force affect the velocity of a moving object?
A force can change an objects speed, direction, or both which would cause a change in velocity. A change in velocity is called acceleration. A special kind of acceleration is called deceleration. Deceleration occurs when a force causes the speed of an object to decrease.
*Acceleration is a change in velocity*Deceleration is when a force cause speed to decrease
KEY WORDS: ACCELERATION = CHANGE IN VELOCITY DECELERATION = DECREASE IN SPEED
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What is Acceleration
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Forces and
Motion
Day 4
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* What is gravity?
Essential Question
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Friction is one type of force the other force that can affect and object's on Earth is gravity. Gravity is an attraction between the mass of Earth and the mass of the object. Gravity is also what keeps Earth moving in a circular path around the sun.
Let's Watch this as a Review:
*Gravity is an attraction between the mass of Earth and the mass of an object*Gravity is a FORCE
NOTES:
What is Gravity
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Forces & Motion P.1.1 - 1.2 Check In
1. On the homepage click on the MasteryConnect icon
2. Type in the code or
Find the Assessment titled
Forces & Motion P.1.1 - P.1.2 Check In
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Forces and
Motion
Day 5
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* What are the two types of force?
Essential Question
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There are two things that can affect and objects acceleration and motion. The first is Force. Remember force is a push or a pull that acts on an object. The second is mass.
If you double the force applied to object it's acceleration will also double. If you double the mass of an object the acceleration will be cut in half. If you increase force acceleration, increases if you increase mass acceleration decreases. Acceleration is calculated by dividing force by mass.
*Force and mass can affect an objects motion*Increase force acceleration increases*Increase mass acceleration decreases*Acceleration = force mass
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Acceleration vs. Motion
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Balanced & Unbalanced Forces
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When all of the forces on an object cancel one another out it is known as balanced forces.
*2 Types of Forces: Balanced and Unbalanced*Balanced force are forces that cancel each other out*Unbalanced forces are forces that do not cancel or partially cancel each other out.*In order for an object to accelerate there must be unbalanced forces.
KEY WORDS: BALANCED FORCES = NO MOVEMENT UNBALANCED FORCES = MOVEMENT
In cases where a certain force is either partially canceled or not canceled at all by other forces are known as unbalanced forces. In order for an object to accelerate there must be unbalanced forces.
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Balanced & Unbalanced Forces
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When an unbalanced force acts on an object, the object's acceleration equals the force divided by the object's mass which is also known as Newton's Second Law of Motion. Newton's 2nd Law of Motion states acceleration equals force divided by an object's mass. So in order for all objects to move a unbalanced force must act on it.
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In Summary...
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Forces & Motion P.1.4 Check In 1
1. On the homepage click on the MasteryConnect icon
2. Type in the code or
Find the Assessment titled
Forces & Motion P.1.4 Check In
November 29, 2018