Force and Motion Flashcards
Newton’s 1st Law of Motion
Law of Inertia
“An object in motion will remain in motion, and an object at rest will remain at rest, unless acted upon by an external force”
Newton’s 2nd Law of Motion
Law of Acceleration
“Force is equal to mass times acceleration”
The acceleration an object experiences is directly proportional to the applied force and inversely proportional to its mass
Newton’s 3rd Law of Motion
Law of Interaction
“For every action, there is an equal and opposite reaction.”
Force
Vector Quantity expressed in Newtons (N) An interaction of two bodies or a body and an environment. Push/pull
Normal Force, Contact Force
Contact Force - two objects touching each other
- Applied Force: push or pull another object
- Normal Force: force applied by an object when another object is resting
- Frictional Force: opposing fore of a non-smooth surface
- Air Resistance Force: frictional force by the air
- Tension Force: force applied by a rope, string, cable when pulling it
- Spring Force: force applied by a compressed/stretched string to an object
Non-contact Forces
An object is acted upon by a force due to its environment
- Gravitational Force: force every object produces
- Electrical Force: force by two charged objects
- Magnetic Force: force by a moving charged object to another object
Friction
Opposing force generated by moving an object accross a non-smooth surface.
Kinetic Friction - resists the motion of a moving object.
Static Friction - resists the initiation of motion. Precisely opposes the applied force. If applied force exceeds, the object begind to accelerate
Friction
Opposing force generated by moving an object accross a non-smooth surface.
Kinetic Friction - resists the motion of a moving object.
Static Friction - resists the initiation of motion. Precisely opposes the applied force. If applied force exceeds, the object begind to accelerate
