Kinetic Energy
What is kinetic energy?
The energy of motion.
What is potential energy?
Stored energy based on position or condition.
Energy that is stored is called __________ energy.
Potential
True or False: Kinetic energy increases as speed increases.
True
A soccer ball sitting on the field.
Potential energy
A car moving down the highway has what kind of energy?
Kinetic energy.
What type of potential energy does a stretched rubber band have?
Elastic potential energy.
Energy of motion is called __________ energy.
Kinetic
True or False: A rock sitting on the ground has no potential energy.
False (it still has some relative to the ground).
A skateboard rolling down a ramp.
Kinetic energy
If you double an object’s speed, how much does its kinetic energy increase?
Four times (since KE = ½mv²).
A book on a high shelf has what kind of energy?
Gravitational potential energy.
The formula for kinetic energy is KE = __________.
½mv²
True or False: Energy can be created or destroyed.
False (it can only change forms).
A stretched bow before releasing an arrow.
Potential energy
Which has more kinetic energy: a small pebble or a bowling ball rolling at the same speed?
The bowling ball, because it has more mass.
What two factors affect gravitational potential energy?
Height and mass.
A stretched spring has __________ potential energy.
Elastic
True or False: A moving object can have both kinetic and potential energy at the same time.
True
A child swinging at the very bottom of the swing.
Kinetic energy
What two factors affect kinetic energy?
Mass and velocity (speed).
If a ball is lifted twice as high, what happens to its potential energy?
It doubles.
The higher an object is lifted, the more __________ potential energy it has.
Gravitational
True or False: When potential energy increases, kinetic energy must also increase.
False (they often convert between each other).
Water held behind a dam before being released.
Potential energy