Podcast
Questions and Answers
What distinguishes contact forces from non-contact forces?
What distinguishes contact forces from non-contact forces?
Which of the following is an example of a non-contact force?
Which of the following is an example of a non-contact force?
Which statement is true about contact and non-contact forces?
Which statement is true about contact and non-contact forces?
Which of the following correctly categorizes the types of forces?
Which of the following correctly categorizes the types of forces?
Signup and view all the answers
What is the primary characteristic that defines contact forces?
What is the primary characteristic that defines contact forces?
Signup and view all the answers
Which of the following best defines force?
Which of the following best defines force?
Signup and view all the answers
What is the SI unit of force?
What is the SI unit of force?
Signup and view all the answers
Which statement about the effects of force is correct?
Which statement about the effects of force is correct?
Signup and view all the answers
In which equation is force expressed as the product of mass and acceleration?
In which equation is force expressed as the product of mass and acceleration?
Signup and view all the answers
What type of motion does force NOT directly affect?
What type of motion does force NOT directly affect?
Signup and view all the answers
Which of the following terms can also denote force?
Which of the following terms can also denote force?
Signup and view all the answers
How is acceleration expressed in relation to force?
How is acceleration expressed in relation to force?
Signup and view all the answers
Study Notes
Force Definition and Characteristics
- Force is anything causing unnatural motion (Aristotle).
- Force is a push or pull on an object. Stretch and squeeze are also descriptions of force.
- Force is an external agent changing rest or motion. It has magnitude and direction.
- Force direction is the direction applied.
- Force is measured using a spring balance.
- SI unit of force is the Newton (N).
Effects of Force
- Force causes changes in motion (position over time).
- Force can cause:
- Movement of a resting object.
- Stopping or slowing a moving object.
- Acceleration of a moving object.
- Changes in direction, shape, and size of a moving object.
Force Formula and Calculation
- Force (F) equals mass (m) times acceleration (a). (F = ma)
- Acceleration (a) is calculated as change in velocity (v) divided by time (t). (a = v/t)
- Force can also be expressed as the rate of change of momentum.
- Momentum (p) = mass (m) x velocity (v).
- Units:
- Newton (N) or kg⋅m/s² (SI)
- Dyne (CGS)
Force Types
- Force types are classified as:
- Contact force
- Non-contact force
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz explores the definition and characteristics of force in physics. You will learn about the effects of force on motion, its formula for calculation, and the units used for measurement. Test your knowledge on the fundamental concepts that govern how forces interact with objects.
