Vocabulary
Energy that an object has due to its motion.
What is kinetic energy?
When the force is perpendicular to motion, this is the amount of work done.
What is zero?
A girl with a mass of 50 kg jogs at 2 m/s. This is her kinetic energy.
What is 100 J?
An object has 6480 J of mechanical energy and 5880 J of potential energy. This is its kinetic energy.
What is 600 J?
A pendulum at its highest point has this type of energy at a maximum.
What is potential energy?
The energy an object has because of its position.
What is potential energy?
You push a box with a force of 200 N across a floor for 3 m. This is the work done.
What is 600 J?
This is what happens to kinetic energy if a runner doubles their speed.
What is it quadruples?
This type of energy transfer occurs when you feel the heat from the sun without touching it.
What is radiation?
At the bottom of its swing, a pendulum has this type of energy at a maximum.
What is kinetic energy?
The energy transferred through space by electromagnetic waves.
What is electromagnetic radiation?
If 450 J of work is done to lift a dog 1.5 m, this is the force used.
What is 300 N?
A 50 kg student sits 0.5 m above the ground. This is their potential energy.
What is 245 J?
This form of energy is stored in chemical bonds and released when they break.
What is chemical energy?
A rock in the air has a ME of 147J. The KE of that same rock just before it hits the ground (ignoring air resistance).
What is 147 J?
Force exerted on an object that causes it to move.
What is work?
This is the power used if a Sherpa does 250 J of work in 25 seconds.
What is 10 W?
Sam stretches a spring (k = 100 N/m) by 0.10 m. This is the elastic potential energy stored.
What is 0.50 J?
This form of energy is carried by waves and includes visible light.
What is electromagnetic radiation?
After a baseball slows down in the air, its kinetic energy primarily converts into this form.
What is thermal energy of the air?
The rate at which one form of energy is transformed into another.
What is power?
This unit is equal to one newton-meter of work.
What is a joule?
A soccer ball (0.4 kg) has 20 J of KE. This is its speed.
What is 10 m/s?
This is the height above the ground of the same 12 kg object with PE = 5880 J.
What is 50 m?
This is the equation showing that total mechanical energy remains the same in an isolated system.
What is PE initial + KE initial = PE final + KE final?