Physics-Power Flashcards
1
Q
What is workdone?
A
Work done is force moved in a given direction
2
Q
What is power?
A
The rate of change of energy ie energy transferred in one second.It is how fast you can do work, power is energy per unit of time
3
Q
What is energy?
A
Energy is the ability to do work and is required for force to be applied in a direction
4
Q
What is power measured in?
A
Watts
5
Q
what is the equation for power?
A
Power=Energy transferred/time (P=E/T) or Power=Work done/time (P=W/T)
6
Q
Whta does one joule of energy equal?
A
One joule of energy transferred in one second=one watt of power
7
Q
Energy=7.5kj
Time= 60 seconds
What is the power
A
Power=Energy transferred/time
Power=7.5kj/60
Power=7500j/60
Power=125W
8
Q
What is the equation for work done ?
A
Force x Distance
