Chapter5- work,energy and power Flashcards
(9 cards)
1
Q
Define: Work done
A
Force x distance moved in the direction of the force
2
Q
What is work done equal to?
A
Work done = energy transferred
3
Q
What is the principle of conservation of energy?
A
Energy cannot be created or destroyed only converted into other forms.
4
Q
Define: Energy
A
The capacity for doing work, measured in joules.
5
Q
Define: gravitational potential energy
A
Is the energy due to the position of an object in earths gravitational field.
6
Q
Equation for EK?
A
1/2 mv^2
7
Q
What is the equation for GPE?
A
Mgh
8
Q
Define: power
A
Power is the rate at which energy is transferred.
9
Q
Watt is the unit of power?
A
Watt 😉 or joules per second
