Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is the definition of work in physics?
What is the definition of work in physics?
- The dot product of displacement and force (correct)
- Energy manifested in various forms
- The area under a force-displacement curve
- The capacity to do work
When does a force do negative work?
When does a force do negative work?
- When the angle between force and displacement is 0°
- When the angle between force and displacement is 90°
- When the force is in the same direction as the displacement
- When the angle between force and displacement is 180° (correct)
What are the units of work in the SI system?
What are the units of work in the SI system?
- Newton
- Joule (correct)
- Dyne
- Erg
What does the area under a force-displacement curve represent?
What does the area under a force-displacement curve represent?
Signup and view all the answers
Which condition results in zero work done by a force?
Which condition results in zero work done by a force?
Signup and view all the answers
Which of the following best defines work?
Which of the following best defines work?
Signup and view all the answers
In which scenario is work considered to be negative?
In which scenario is work considered to be negative?
Signup and view all the answers
What is the importance of a force-displacement curve?
What is the importance of a force-displacement curve?
Signup and view all the answers
How is kinetic energy best defined?
How is kinetic energy best defined?
Signup and view all the answers
What does the law of conservation of mechanical energy state?
What does the law of conservation of mechanical energy state?
Signup and view all the answers
