Forces and energy Flashcards
What is the equation for work done
W= F x D
The equation for power
Work done divide Time
Equation for elastic potential energy
Elastic p = 0.5 x Force x Extension
E= 0.5 x F x E
Define power
The rate of doing work
What happens to an object that gains energy
It gets faster or higher
Equation for spring constant
Force divided extension
K= F divided E
Define specific heat capacity
The measure of how hard it is to increase the temp of an object
This allows us to calculate the thermal energy
Equation
GPE= Mass x GPE x Height
Define spring constant
Is a measure of how difficult it is to stretch a spring
Define Kinetic energy
The movement energy that an object has
How is work done measured
in Newtons
Equation for thermal energy
Thermal energy = Mass x SPC x Change in temp
Q= M x C x CH in temp
Equation for kinetic energy
Kinetic = 0.5 x Mass x Velocity squared
Define gravitational potential energy
A sum of energy that a object has above the Earths surface
What is the equation for when the object is moving vertically
Mass x 10 Kg
What is energy conservation
The total amount of energy present stays the same before and after any changes.
Define work done
The exact amount of how much energy is moving around
