Kinetic Energy
What is the definition of kinetic energy
energy associated to motion
Potential energy is the energy of
stored energy
energy associated to heat
thermal energy
Explain 3 types of work
positive, zero, and negative
power is defined as
rate of work
If the mass is doubled, what happens to the kinetic energy?
The kinetic energy is doubled
if the height is douhbled the PE
doubles
What is the energy associated to water
hydroelectricity
gravitational acceleration 9.8
no power is scalar
Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s.
1.05 x 105 J
In the formula for PE elastic what does k stand for?
spring constant
energy associated to food
chemical energy
if the direction of motion and the force are in the same direction work is
positive
if the time doubles the power should be
cut in half
What happens to the kinetic energy of a bullet if the velocity doubles
KE will quadruple
what are the units of the spring constant
N/m
what do you call someone who studies energy
mechanic
Work and force are ______ related
proportional/ directly
power and time are _____ related
inversely
what variable in kinetic energy holds the most importance?
what is velocity
As the height increases the potential energy
increases by the same factor
kinetic and potential energy
mechanical energy
convert 16700 joules to KJ
16.7 kJ
what are the units of power
watts