Force and Motion
What is a Force?
What is a Force?
A force is a push or a pull on an object. A force happens when two objects interact—that is, when one object does something to the other object. When the interaction stops, the force stops, too.
A force is a push or a pull on an object. A force happens when two objects interact—that is, when one object does something to the other object. When the interaction stops, the force stops, too.
Forces
Forces
Forces can be a push, pull or a twist. They make things move, change their speed or change shape.
Forces can be a push, pull or a twist. They make things move, change their speed or change shape.
VID_20211119_103925.3gpPing-Pong
Ping-Pong
PUSH
Forces
Forces
Forces only exist as a result of an interaction.
Forces only exist as a result of an interaction.
https://www.physicsclassroom.com/class/newtlaws/Lesson-2/The-Meaning-of-Force
Rockets ready, set,
Rockets ready, set,
But who can spot the design flaw?
GO!
GO!
Forces in action...
VID_20211123_093306.3gpRockets Launched!
Rockets Launched!
What forces are acting on the rocket?
Forces can be placed into two different categories
Forces can be placed into two different categories
Contact Forces - These are forces where the two interacting objects are in contact with each other which results in a change in motion or shape.
Contact Forces - These are forces where the two interacting objects are in contact with each other which results in a change in motion or shape.
Non-Contact Forces - These are forces which act over a distance, there is no direct contact yet they are able to exert a push or pull over a distance.
Non-Contact Forces - These are forces which act over a distance, there is no direct contact yet they are able to exert a push or pull over a distance.
Contact Forces
Contact Forces
Frictional
Tension
Normal
Air Resistance Force
Applied Force
Spring Force
https://www.physicsclassroom.com/class/newtlaws/Lesson-2/The-Meaning-of-Force
Non-Contact Forces
Non-Contact Forces
Magnetic Force
Gravitational Force
Electrostatic Force
Balanced and Unbalanced Forces
Balanced and Unbalanced Forces
Newton's first law of motion
Newton's first law of motion
- An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
When two individual forces are of equal magnitude and in opposite directions, then the forces are said to be balanced . There will be no change in motion of the object. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
Force Diagrams are used to show the direction and size of forces acting on objects.
Force Diagrams are used to show the direction and size of forces acting on objects.
To fully describe the force acting upon an object, you must describe both the magnitude (size or numerical value) and the direction. Force is measure in Newtons(N). One Newton is the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s.
To fully describe the force acting upon an object, you must describe both the magnitude (size or numerical value) and the direction. Force is measure in Newtons(N). One Newton is the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s.
