Work, Energy, and Power
A spring with a spring constant of is stretched by . What is the potential energy stored in the spring?
A block of mass is attached to a spring with spring constant . The spring is compressed by a distance and then released. What is the maximum kinetic energy of the block, assuming no energy loss?
If the distance between two objects is doubled, how does their gravitational potential energy change?
It is doubled.
It is halved.
It is quadrupled.
It is quartered.
What is the change in gravitational potential energy of a book lifted from the ground to a height of ?
A block slides down a ramp with friction. How does the work done by friction affect the potential energy of the block-Earth system?
It increases the potential energy.
It decreases the potential energy.
It does not affect the potential energy.
It converts potential energy into thermal energy.
Which of the following forces is considered a conservative force?
Friction
Air resistance
Gravity
Applied force by a person
A box is pushed across a rough horizontal surface. What happens to the potential energy of the box?
The potential energy increases.
The potential energy decreases.
The potential energy remains constant.
Potential energy is converted to thermal energy.

How are we doing?
Give us your feedback and let us know how we can improve
Potential energy is a...
Vector quantity with magnitude and direction.
Scalar quantity with only magnitude.
Vector quantity with only direction.
Base quantity.
How does changing the relative positions of objects within a system affect the potential energy of the system?
It does not affect the potential energy.
It always increases the potential energy.
It always decreases the potential energy.
It changes the potential energy.
Why is the zero point for potential energy considered arbitrary?
Because potential energy is a vector quantity.
Because only the change in potential energy matters.
Because potential energy is always zero.
Because potential energy is a non-scalar quantity.