Questions and Answers
What are the types of forces represented by the letters: Fw, Ff, Fa, Fn?
What is the force that opposes the motion of an object?
Force of Friction (Ff)
What is the force of attraction between an object and the center of the Earth?
Force of Gravity (Fw)
What is the force supporting an object to the surface called?
Signup and view all the answers
What is net force?
Signup and view all the answers
What defines an object at equilibrium?
Signup and view all the answers
What is inertia?
Signup and view all the answers
What does Newton's 1st law state?
Signup and view all the answers
Mass and inertia are:
Signup and view all the answers
What is weight?
Signup and view all the answers
Mass is measured in:
Signup and view all the answers
Mass and acceleration are:
Signup and view all the answers
Net force and acceleration are:
Signup and view all the answers
What is stated in Newton's 2nd law?
Signup and view all the answers
What does Newton's 3rd law state?
Signup and view all the answers
What are force pairs?
Signup and view all the answers
How does friction act?
Signup and view all the answers
What does friction depend on?
Signup and view all the answers
What is static friction?
Signup and view all the answers
What is kinetic friction?
Signup and view all the answers
What is the coefficient of friction?
Signup and view all the answers
What is terminal velocity?
Signup and view all the answers
What occurs in a vacuum?
Signup and view all the answers
Study Notes
Forces Overview
- Types of forces include Force of Weight (Fw), Force of Friction (Ff), Applied Force (Fa), and Normal Force (Fn).
Force of Friction (Ff)
- Opposes the motion of an object, acting in the opposite direction to movement.
Force of Gravity (Fw)
- Attracts an object towards the center of the Earth, a fundamental force governing motion.
Normal Force (Fn)
- Acts perpendicular to the surface, supporting an object's weight and preventing it from falling through.
Net Force
- The resultant force acting on an object can be calculated as Fa - Ff or Ff - Fw (considering air resistance).
Object at Equilibrium
- An object is either at rest or moving with a constant velocity, indicating no net force acting on it.
Inertia
- Describes an object's tendency to resist changes in its motion, related to its mass.
Newton's 1st Law
- States that an object will remain at rest or in uniform motion unless acted upon by an external force.
Mass and Inertia
- Directly related; increased mass leads to greater inertia, making the object harder to accelerate.
Weight
- Measured in newtons (N) or pounds (lb), represents the gravitational attraction between an object and a planet.
Mass
- Measured in kilograms (kg) or slugs, refers to the quantity of matter in an object.
Mass and Acceleration
- Inversely proportional; as mass increases, acceleration decreases when force is constant.
Net Force and Acceleration
- Directly related; net force acting on an object results in its acceleration.
Newton's 2nd Law
- Focuses on the relationship between net force and acceleration, establishing that net force is the cause of acceleration.
Newton's 3rd Law
- Defines the principle that for every action, there is an equal and opposite reaction.
Force Pairs
- Consist of action and reaction forces, represented as Fa,b.
How Friction Acts
- Friction acts parallel to the contact surface and opposite to the direction of motion.
Factors Influencing Friction
- Depends on the types of materials in contact and the normal force exerted between them.
Static Friction
- Prevents an object from starting to slide, always greater than kinetic friction; can exist while an object is stationary or moving without sliding.
Kinetic Friction
- Acts on moving objects, functioning to slow them down in the opposite direction of their motion.
Coefficient of Friction
- A dimensionless ratio that measures the frictional force relative to the normal force pressing the surfaces together.
Terminal Velocity
- The maximum velocity an object can achieve while falling, influenced by its surface area and weight distribution.
Vacuum
- In a vacuum, objects experience free fall at the same rate, regardless of mass, due to the absence of air resistance.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on various types of forces such as gravitational, frictional, and normal forces. This quiz will challenge your understanding of how these forces interact in the physical world. Perfect for students learning about physics concepts.