Show:
Vocabulary
Work
Potential/Kinetic Energy
Power/Energy
Toss Up
100
This is the use of force to move an object
What is work?
100
This is the equation for calculating work
What is W = Fd?
100
This is the equation for calculating gravitational potential energy
What is GPE = mgh?
100
This is the equation for calculating power from energy
What is P = E/t?
100
These are two factors that slow down a pendulum
What are air resistance and friction?
200
This is the rate at which work is done
What is power?
200
This is the unit of measure for force
What is Newtons (N)?
200
This is the equation for calculating kinetic energy
What is KE = mv2/2 OR 1/2 mv2?
200
This is the unit of measure for power
What is watt (W)?
200
This is the type of energy you have when you are at the top of a slide
What is potential energy?
300
This is the amount of work a horse can do in one minute
What is horsepower?
300
This is the unit of measure for work
What is joule (J)?
300
This is the value of g
What is 9.8m/s2?
300
Calculate for power: an Antarctic explorer uses 5700J of work to pull his sled for 63s.
What is 90.5W?
300
This is the formula for mechanical energy (ME)
What is GPE + KE?
400
This is stored energy
What is potential energy?
400
Calculate for work: You push a cart with a force of 25N for 3m.
What is 75J?
400
Calculate for energy: you lift a 3.5kg box of toys to the top shelf of a closet, which is 4m high.
What is 137.2J?
400
Calculate for power: A laptop computer uses 120J every 2.5 seconds.
What is 48W?
400
This is the percentage of ME (mechanical energy) at the end of all calculations.
What is 100%?
500
This is the energy of motion
What is kinetic energy?
500
This is how far you push a cart when you use a force of 412N and the amount of work you do is 675J.
What is 1.64m?
500
Calculate for energy: A grasshopper with a mass of 0.01kg jumps at a speed of 11m/s
What is 0.6J?
500
Calculate for power: a conveyor belt uses 13J to move a piece of candy a distance of 1.5m in 25s.
What is 0.52W?
500
This is the law of conservation of energy
What is no matter how energy is transferred of transformed, it continues to exist in one form or another?