AS Physics

1. has magnitude but no direction
8. energy stored in an extended or compressed material
11. the rate of change of an object's velocity
12. the product of the force and the distance moved by the force in the direction of travel
14. has both magnitude and direction
15. the net force acting on an object
16. using a drawing often to scale to find the resultant vector
17. force x perpendicualar distance from the pivot point to line of action of the force
18. the point where rge ebtire weight of an object appears to act
19. the ratio of useful output energy to the total input energy of a device

2. the total distance travelled by an object divided by the time taken
3. energy of an object due to its motion
4. the product of one of teh forces of a couple and the perpendicular distance between them
5. and object in equilibrium is either at rest or travelling with a constant velocity because the net force on it is zero
6. the rate of change of the distance moved by an object
7. the force that will give a 1kg mass and acceleration of one metre per second
9. the energy stored by and object by virtue if its position in the Earth's gravitational field
10. the force on an object cause by the gravitational field acting on it's mass
13. the distance moved by an object in a particular direction, measured from a fixed start point
14. the rate of change of the displacement of an object