# Physics P2.2 Revision

HideShow resource information
When you pedal on a bike where does the energy transfered go to?
It is lost though friction as heat
1 of 11
What is the realationship between enery and work done?
Energy transfered = Work done
2 of 11
What is work?
When an obeject is moved by a force we say work has been done on the force
3 of 11
A wheelbarrow is moved 5m with a force of 50N. How much work is done?
W=F×D 50N×5m=250Nm
4 of 11
Why do brake pads become warm?
Work is done to overcome friction; is transferred as energy that heats the brake pads and the surroundings
5 of 11
What is weight?
Weight = Gravitational field strength × Mass (kg)
6 of 11
What are the units in gravitational potential energy?
Ep (Joules) Mass(kg) change in height (m) Gravitational field strength (N/kg)
7 of 11
The equation for kinetic energy?
Kinetic enegy (J) = 0.5 × Mass (kg) × Velocity2 (m/s)
8 of 11
What is elastic potiential energy?
Elastic potiencial energy stored in an object when work is done to change its shape.
9 of 11
How do we calculate momentum?
P = M × V
10 of 11
What is the unit of momentum?
kg m/s
11 of 11

## Other cards in this set

### Card 2

#### Front

What is the realationship between enery and work done?

#### Back

Energy transfered = Work done

What is work?

### Card 4

#### Front

A wheelbarrow is moved 5m with a force of 50N. How much work is done?

### Card 5

#### Front

Why do brake pads become warm?

## Comments

No comments have yet been made

## Similar Physics resources:

See all Physics resources »See all Equations and Formulae resources »