Podcast
Questions and Answers
Which of the following is an example of a contact force?
Which of the following is an example of a contact force?
- Electric force
- Friction (correct)
- Gravity
- Magnetic force
What is the SI unit of force?
What is the SI unit of force?
- Joule
- Watt
- Pascal
- Newton (correct)
Which of the following is an example of a non-contact force?
Which of the following is an example of a non-contact force?
- Tension force
- Air resistance
- Electric force (correct)
- Normal force
Flashcards
Contact Force
Contact Force
A force that requires direct physical contact between objects.
Newton (N)
Newton (N)
The standard unit of force in the International System of Units, equivalent to kg⋅m/s².
Non-Contact Force
Non-Contact Force
A force that acts between objects without direct physical contact.
Study Notes
Types of Forces
- An example of a contact force is when a person pushes a box, where the person's hands are in direct contact with the box.
- The SI unit of force is the Newton (N).
- An example of a non-contact force is the gravitational force between the Earth and a falling object, where there is no physical contact between the two objects.
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