Work done by a force Flashcards
1
Q
Define Work done
A
Force x distance moved in the direction of the force (W=Fx)
2
Q
What is work and energy measured in?
A
Joules (J) the same as Nm
3
Q
Define the joule
A
1J is the work done by a force of 1N when it moves an object 1m parallel to its line of action
4
Q
How do you know if a force is doing work?
A
When a force moves something it does work on it
5
Q
How to calculate gravitational potential energy (Ep)?
A
Ep = mgh
6
Q
How to calculate kinetic energy (Ek)?
A
Ek = 0.5 x m x v2
