Energy
What is potential energy?
Stored energy associated with an object's position, condition, or arrangement.
What does GPE stand for?
Gravitational potential energy
Does a completely motionless object have kinetic energy due to its motion?
Nope!
At the top of a tall roller-coaster hill, which is generally greater: GPE or KE?
GPE
What is kinetic energy?
Energy an object has because it is moving.
Name TWO things that affect an object's gravitational potential energy near Earth's surface.
Mass and height
Which has more kinetic energy if everything else is equal: a slowly moving bicycle or a rapidly moving bicycle?
Rapidly moving bicycle
As a roller coaster travels downhill, what energy transformation occurs?
Gravitational potential energy is transformed into kinetic energy.
A basketball sits motionless on a high shelf. Does it have energy?
Yes. It has gravitational potential energy because of its position above the ground.
Two identical bowling balls are sitting at heights of 1 meter and 3 meters. Which has more GPE?
The one at 3 meters
A roller coaster speeds up while going downhill. What happens to its kinetic energy?
It increases because it is speeding up
A ball is thrown upward. Describe the change between KE and GPE.
KE decreases while GPE increases as the ball rises.
A basketball begins falling from the shelf. What happens to its gravitational potential energy?
It decreases as the ball gets lower.
Two objects are at the same height, but one has more mass. Which generally has more GPE?
The one with more mass.
A skateboarder slows while traveling uphill. What happens to kinetic energy?
It decreases because it is slowing down
A swing eventually stops. A student says its energy disappeared. Correct them.
Energy was transferred/transformed into other forms, including thermal energy and sound; it didn't simply disappear.
If a basketball falls and speeds up, what happens to its kinetic energy? Explain.
Its kinetic energy increases because its speed increases.
A skateboarder travels uphill. What happens to the skateboarder's GPE as height increases?
GPE increases
A ball is thrown straight upward. Describe what happens to its kinetic energy as it rises.
It starts to slow down so the kinetic energy decreases
False, the high kinetic energy will make it difficult to stop quickly