Work, Energy, and Power Flashcards
1
Q
What differentiates scalar and vector quantities?
A
Scalar quantities have only magnitude while vector quantities additionally have direction.
2
Q
What does it mean for an object to be in equilibrium?
A
The resultant force is 0.
3
Q
What is the definition of a joule?
A
A joule is the energy needed to move a mass of one kilogram a distance of one meter with one newton of force.
4
Q
What happens when work is done against friction?
A
When work is done against friction acting on an object, the object’s temperature increases.
5
Q
What is the difference between elastic and inelastic deformation?
A
If an object returns to its original shape after forces are removed, it is elastically deformed. If the original shape does not return, deformation is inelastic.
