Potential Energy
stored energy
potential energy
energy of movement
kinetic energy
the ability to do work
energy
main source of energy
the sun
formula for potential energy
mgh
formula for kinetic energy
1/2mv2
value for g
gravity = 9.8 m/s2
this type of energy comes from earth's heat
geothermal
A spring has _____ potential energy when stretched or compressed (more or less)
more
Calculate the kinetic energy of an object of mass 4kg moving with a speed of 3m/s.
18 J
energy produced by heat
thermal
Why is energy of flowing water renewable?
water cycle
On a roller coaster, as kinetic energy increases, what happens to potential energy?
decreases
You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand at a speed of 30 m/s. Calculate the amount of kinetic energy the ball has.
945 J
energy stored in bonds between atoms and molecules
chemical
resources that can be replenished in a short period of time
renewable resources
A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. How much potential energy does the carriage have?
252 Joules
A car of mass 800kg accelerates from 2m/s to 4m/s. What is the increase in kinetic energy?
1600 J to 6400 J or an increase of 4800 J
Stretching of the rubber band is an example of
Elastic potential energy
Coal, petroleum, natural gas are called what?
fossil fuels