You push a 1,000 N car 5 meters. How much work did you do?
What is 5,000 J of work
200
If you push harder (more force) you do __________ work
What is more?
200
Energy of position
What is Gravitational potential energy?
200
More or Less Power?
You take longer to climb a flight of stairs.
Less Power
200
The unit of energy
What is Joules?
200
You do 120 joules of work in 2 seconds. How much power did you use?
What is 60 watts?
300
Energy can only be converted from one form to another; it cannot be destroyed or created.
What is The Law of Conservation of Energy?
300
Kind of energy that increases as an object moves faster and faster.
What is kinetic energy?
300
The unit of Power
What is Watt?
300
Amount of work done when 4 Newtons of force is applied to a 400 kilogram object
What is no work?
300
You lift a 50 N rock up a 5 m staircase in 10 seconds. How much power did you generate?
What is 20 W
400
To do work, force has to be in which direction to the motion?
What is parallel to the motion?
400
The unit of Energy
What is Joule
400
The amount of Power generated if 40 Joules of work is done in 2 seconds.
What is 20 Watts?
400
Part way down a frictionless roller coaster, the car has 30 J of Potential Energy, and 60 J of Kinetic energy. How much kinetic energy will the car have at the bottom of the hill?
What is 90 J?
400
Halfway down a roller coaster, you have 50 J of GPE and 50 J of KE. What is the amount of PE you had at the top of the hill?
What is 100 J
500
The amount of work being done when holding a 200 lb barbell above your head for 30 seconds.
When swinging objects slow down and stop, they appear to be doing this, but it is really due to friction.
What is 100 seconds?
500
Amount of time it takes to do 500 Joules of work using 5 watts of power
Some energy is transformed to heat due to friction.
500
Halfway down a roller coaster, you have 5000 J of GPE and 5000 J of KE. If you are in a 20 kg cart, what is height of the original hill? (Assume g=10 m/s2)