more test revision Flashcards
1
Q
When is work done
A
work is done when a force moves its point of application
2
Q
work done =
A
Force x displacement in direction of force
3
Q
what is the unit of work
A
joules
4
Q
What is energy
A
energy is the ability to do work
5
Q
What is potential energy
A
Potential energy is the energy of an object because of its position or state
6
Q
gravitational potential energy equation
A
Ep = m g h
Gravitational potential energy = mass x gravity x height
7
Q
What does weight =
A
weight = mass x gravity
8
Q
What is kinetic energy
A
kinetic energy is the energy of a body due to its motion
