Unit 1.4 Physics

Work, W

Work done by a force is a product of the magnitude of the force and the distance moved in the direction of the force (W.D. = Fxcosθ) (Unit: J)

1 of 7

Principle of conservation of energy

Energy cannot be created or destroyed, only transferred from one form to another. Energy is a scalar.

2 of 7

Potential energy, Ep

Energy possessed by an object by virtue of its position. Ep= mgh

3 of 7

Kinetic energy, Ek

Energy possessed by an object by virtue of its motion. Ek= 0.5mv^2

4 of 7

Elastic potential energy

This is the energy possessed by an object when it has been deformed due to forces acting on it. E,elastic = 0.5Fx or 0.5kx^2

5 of 7

Energy

The amount of work it can do. Unit: J

6 of 7

Power, P

The work done per second, or energy transferred per second

7 of 7

Other cards in this set

Energy cannot be created or destroyed, only transferred from one form to another. Energy is a scalar.

Principle of conservation of energy

Energy possessed by an object by virtue of its position. Ep= mgh

Energy possessed by an object by virtue of its motion. Ek= 0.5mv^2

This is the energy possessed by an object when it has been deformed due to forces acting on it. E,elastic = 0.5Fx or 0.5kx^2

Get Revising