Energy 2 * Flashcards
1
Q
What is work done?
A
a measure of how much energy is transferred (measured in Joules)
2
Q
How is work done?
A
mechanically by a force moving an object
3
Q
What is the force needed to lift an object equal to?
A
the objects weight
4
Q
What is the equation to find the work done?
A
force x distance
5
Q
How is weight calculated?
A
mass x 10
6
Q
How do you calculate work done if the force applied to move an object is not constant
A
you can use a graph - find the area of the space beneath the line
7
Q
What is power?
A
the rate of transferring energy
8
Q
Fill the gaps:
the _______ the energy is transferred, the ______ the power
A
the quicker the energy is transferred, the higher the power
9
Q
What is the equation to find the power?
A
work done / time
