Newton's Laws of Motion
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Beth was sick last week and now she has 2 missing assignments.
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Bonneville Salt Flats Drag Racing
1. Scientific Observation 2. Scientific Question
Phenomenon
Force = PUsh or pull
Balanced force
Unbalanced force
Balanced force: Pencil resting on desk
Unbalanced force: Pencil falling
Cat Jump Fail
1. When are forces BALANCED? 2. When are forces UNBALANCED?
Gravity
Applied Force
Friction
Force that opposes motion between 2 objects that are touching
Force applied to object by a person or thing.
Pulls objects toward each other. Earth’s gravity gives weight to objects.
When you push the box across floor, friction between floor and box opposes your push.
You and box are pulled toward ground (not flying into the air)
Pushing a heavy box, you apply a force
First Law of Motion
The first law states that an object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction, unless acted upon by an unbalanced force. This concept is also known as the law of inertia.
A snowboarder gliding on ice will keep moving at a constant speed and direction until acted upon by an unbalanced force, like friction or an external force.
First Law of Motion
An object at rest will remain at rest and an object in motion will stay in motion unless acted on by a force.
First Law of Motion is also called the Law of Inertia
Inertia: tendency for an object to resist change in motion (more mass = more inertia)
In basketball, the external force is the player's hand, which exerts a force on the ball to make it bounce back up after it hits the ground.
In the case of a curling stone sliding on ice, the unbalanced force acting upon it is friction, which slows it down until it stops.
This allows you to enlarge the interactive to "Fullscreen"
THE SECRET WORD IS IN THIS SECTION!
Second Law of Motion
The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This means that the greater the force applied to an object, the greater its acceleration will be, and the heavier the object, the slower its acceleration will be. F = ma
A baseball player can hit the ball farther and harder by swinging the bat with a greater force.
The more force, the faster the baseball will fly!
F = M a
Force is measured in NEWTONS
When a quarterback throws a football, the force of the throw is proportional to the mass and acceleration of the ball.
When a hockey player hits a puck with their stick, the force of the impact is proportional to the mass and acceleration of the puck.
Which one has more force?
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
F=ma
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
Force = 1000kg x 10 m/s2
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
Force = 10,000 kg.m/s2
Force = 10,000 N
The train's mass is 150,000 kg and it is also traveling at 10 m/s2
What is the force?
10,000 N
Which one has more force?
1,500,000 N
Login Instructions:
- Teacher username: RKERN
- Class: Science 7
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Assignment 4.2
Assignment 4.3
Third Law of Motion
The third law states that for every action, there is an equal and opposite reaction. This means that if one object exerts a force on another object, the second object will exert an equal and opposite force back on the first object.
When a skier pushes against the snow with their skis, the snow exerts an equal and opposite force back on the skier's skis, pushing the skier forward.
When an ice track skater pushes their foot backwards on the ice, the ice exerts an equal and opposite force forwards on the skater's foot.
In water flyboarding, the rider holds onto a hose that is connected to a watercraft, which provides the jet of water that lifts the board into the air.
F=ma
F=150,000 kg (10 m/s2)
F = 1,500,000 N
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Transcript
Newton's Laws of Motion
Upcoming Activities:
Beth was sick last week and now she has 2 missing assignments.
How does she get access to last week's assignments?
Step 1: Click HERE
Step 2: Select the week you want to open:
Bonneville Salt Flats Drag Racing
1. Scientific Observation 2. Scientific Question
Phenomenon
Force = PUsh or pull
Balanced force
Unbalanced force
Balanced force: Pencil resting on desk
Unbalanced force: Pencil falling
Cat Jump Fail
1. When are forces BALANCED? 2. When are forces UNBALANCED?
Gravity
Applied Force
Friction
Force that opposes motion between 2 objects that are touching
Force applied to object by a person or thing.
Pulls objects toward each other. Earth’s gravity gives weight to objects.
When you push the box across floor, friction between floor and box opposes your push.
You and box are pulled toward ground (not flying into the air)
Pushing a heavy box, you apply a force
First Law of Motion
The first law states that an object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction, unless acted upon by an unbalanced force. This concept is also known as the law of inertia.
A snowboarder gliding on ice will keep moving at a constant speed and direction until acted upon by an unbalanced force, like friction or an external force.
First Law of Motion
An object at rest will remain at rest and an object in motion will stay in motion unless acted on by a force.
First Law of Motion is also called the Law of Inertia
Inertia: tendency for an object to resist change in motion (more mass = more inertia)
In basketball, the external force is the player's hand, which exerts a force on the ball to make it bounce back up after it hits the ground.
In the case of a curling stone sliding on ice, the unbalanced force acting upon it is friction, which slows it down until it stops.
This allows you to enlarge the interactive to "Fullscreen"
THE SECRET WORD IS IN THIS SECTION!
Second Law of Motion
The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This means that the greater the force applied to an object, the greater its acceleration will be, and the heavier the object, the slower its acceleration will be. F = ma
A baseball player can hit the ball farther and harder by swinging the bat with a greater force.
The more force, the faster the baseball will fly!
F = M a
Force is measured in NEWTONS
When a quarterback throws a football, the force of the throw is proportional to the mass and acceleration of the ball.
When a hockey player hits a puck with their stick, the force of the impact is proportional to the mass and acceleration of the puck.
Which one has more force?
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
F=ma
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
Force = 1000kg x 10 m/s2
A 1000 kg car traveling 10 m/s² hits a wall. What force does it hit that wall?
Force = 10,000 kg.m/s2
Force = 10,000 N
The train's mass is 150,000 kg and it is also traveling at 10 m/s2
What is the force?
10,000 N
Which one has more force?
1,500,000 N
Login Instructions:
Assignment 4.2
Assignment 4.3
Third Law of Motion
The third law states that for every action, there is an equal and opposite reaction. This means that if one object exerts a force on another object, the second object will exert an equal and opposite force back on the first object.
When a skier pushes against the snow with their skis, the snow exerts an equal and opposite force back on the skier's skis, pushing the skier forward.
When an ice track skater pushes their foot backwards on the ice, the ice exerts an equal and opposite force forwards on the skater's foot.
In water flyboarding, the rider holds onto a hose that is connected to a watercraft, which provides the jet of water that lifts the board into the air.
F=ma
F=150,000 kg (10 m/s2)
F = 1,500,000 N