physics Flashcards
1
Q
define kinetic energy
A
kinetic energy is the energy stored in moving objects
2
Q
what is the equation for kinetic energy
A
Ek = 0.5 x m x v squared
3
Q
what is the equation for elastic potential energy
A
Ee = 0.5 x k x e squared
4
Q
define gravitational potential energy
A
the energy stored in an object due to it’s position above the earth’s surface
5
Q
what is the equation for gravitational potential energy
A
Ep = m x g x h
6
Q
what does ‘<’ represent
A
conventional current
7
Q
what does ‘>’ represent
A
electric current
8
Q
define current
A
an electric current is the flow of electric charge around a circuit
9
Q
how does current work in a series circuit
A
the current in a series circuit is never used up and the current is the same all the way around
