| A | B |
|---|
| Unit of measurement for forces | Newtons (N) |
| A force is either on or the other of these | Push or a Pull |
| force between two surfaces | Friction |
| force caused by gravitational attraction | Weight |
| if balanced forces on moving object | Continue moving at same speed and direction |
| if balanced forces on stationary object | object remains stationary(at rest) |
| The force pushing against falling objects | air resistance |
| Device to increase air resistance | parachute |
| Turning force | a moment ( clockwise/anticlockwise) |
| formula for calculating MOMENT Ncm | force x distance from pivot |
| Formula for calculating PRESSURE | force/Area |
| Footwear for reducing pressure | Snow shoes/skis |
| Footwear for increasing pressure | Ice skates / studs & spikes |
| Formula for SPEED m/s km/h | Distance/Time |
| Speed of 100m Olympic sprinter | 10m/s |
| Increase in pushing force causes | Acceleration |
| Would reduce friction acting on a tyre | ice on road |
| To balance fat boy on end of seesaw | Thin boy sits nearer to pivot |
| An unbalanced force acting on an object | change ;speed, direction,shape of object |
| Designed to increase friction | brakes |
