The Following topics are the MAIN areas of study for this unit for both Foundation and higher level candidates. It is advised that these areas should be revised in more depth.
NB Those topics needed by Year 11 students for the terminal exam are highlighted in blue
a) Speed
Speed
=
Distance
÷
Time
S
=
D
÷
T
(m/s) (km/h) (mph)
(m) (km) (miles)
(secs) (hrs)
b) Velocity
Is Rate at which speed increases.
Measured in m/s2
Either
| Acceleration | = | Change in Speed | ÷ | Time |
| A | = | D D | ÷ | T |
| (m/s2) | (m/s) | (secs) |
Or
INCREASED FORCE |
DECREASED MASS |
 |
 |
| Acceleration | = | Force | ÷ | Mass |
| Acc | = | F | ÷ | m |
| (m/s2) | (N) | (kg) |
SPEED |
THINKING DISTANCE |
BRAKING DISTANCE |
OVERALL STOPPING DISTANCE |
20 mph |
20 ft. (6 m) |
20 ft. (6 m) |
40 ft. (12 m) |
30 mph |
30 ft. (9 m) |
45 ft. (14 m) |
75 ft. (23 m) |
40 mph |
40 ft. (12 m) |
80 ft. (24 m) |
120 ft. (36 m) |
50 mph |
50 ft. (15 m) |
125ft. (38 m) |
175 ft. (53 m) |
60 mph |
60 ft. (18 m) |
180 ft. (55 m) |
240 ft. (73 m) |
70 mph |
70 ft. (21 m) |
245 ft. (75 m) |
315 ft. (96 m) |
| THINKING DISTANCE | BRAKING DISTANCE |
|---|---|
| Age | Road Conditions (water/ice etc) |
| Distractions | Tyre Conditions/Inflation |
| Drugs/Alcohol | Brake Conditions |
| Tiredness/Illness | Weight of Veichle |
| ANTI CLOCKWISE MOMENT | = | CLOCKWISE MOMENT |
| f × d | = | F × D |