Energy Flashcards
Name two types of Energy
Potential and Kinetic
What is the formula for Kinetic Energy?
KE=1/2MV(squared)
If you double the velocity what will happen to the KE?
4x as much KE
Does mass equal weight?
NO. weight is mass times gravity
What is potential energy?
energy available or waiting to be converted to power
What is the formula for potential energy?
PE= mgh
Does a glass of water on the table have energy? If so what kind.
Microscopic Kinetic Energy is part of the internal energy. Molecular attractive forces are associated with potential energy
What sort of energy does breathing require? Explain
Potential energy in the form of ATP is then converted to kinetic energy in the form of mechanical work. At the end of inspiration the elevated rib cage has stored potential energy in the form of elestic proper tie of the ribcage and then drive kinetic energy in the form of expiration.
What is a Joule?
basic unit of energy. It is the force of one newton that moves its point of application one meter in the direction of that force
What is work?
the energy expenditure application where force is applied in the direction of that force
what is the formula for work?
Work= Force x Distance
What is power?
power is the rate of working (or the rate of expending energy)
How is power measured?
in watts
what is a watt?
watt= 1joule per second
