When an object with ____ is in motion and has _______.
What are mass and velocity
100
When an object which has ____ has a _______.
What are mass and position
100
Define work.
The transfer of energy through motion.
100
A diver on top of a diving board is an example of ______________ energy.
What is potential energy
200
Type of energy involved in movement of machine parts.
What is mechanical energy
200
What is the formula for Kinetic Energy?
KE = 1/2 mv^2
200
What is the formula for Potential Energy?
PE = mgh
200
What is the formula for Work?
Work = Force * distance (W = F*d)
200
A car rolling down a hill is an example of ___________ energy.
What is kinetic
300
Type of energy involving the movement of photons.
What is radiant(electromagnetic) energy
300
How much Kinetic Energy does someone with mass 100kg running at 2m/s have?
200J
300
What is the Potential Energy of a helicopter hovering 10m above the ground with a 2000kg mass?
196,000 J
300
How much work does a horse do if it exerts a 11N force on a car and pulls it 20m?
220J
300
Energy cannot be created or destroyed
What is the Law of Conservation of Energy
400
When you use a toaster, _______ energy is turned into ______
What are electrical and thermal
400
What is the velocity of a 30kg cheetah that has a Kinetic Energy of 9375 J?
25 m/s
400
How high above the ground is a 15kg eagle with a Potential Energy of 2805 J?
187 m
400
How much force was used if a table is moved 30m and 630J of work was done?
21N
400
What kind of energy does a stretched rubber band have?
(Elastic) Potential Energy
500
How does energy change when you turn on a flashlight?
It goes from chemical to electrical to radiant energy.
500
A biker has a mass of 45kg. What is their kinetic energy if they travel 80 meters in 16 seconds?
562.5 Joules
500
A 3 kg ball on top of a building falls down onto a ledge 26 m above the ground. If it's original PE was 1000J, how much Potential Energy did it lose?
235.6 J
500
How much work is done if a crate with mass 5kg is moved 14 m with an acceleration of 8m/s^2?
560 Joules
500
If a falling branch is 3/4 of the way to the ground from it's original position and it's current potential energy is 12 J, (approximately) how much potential energy did it have at it's original position?