click below
click below
Normal Size Small Size show me how
6.1 Revision 1
Revision of speed, distance and acceleration
Question | Answer |
---|---|
The unit for acceleration is | m/s2 |
The unit for velocity is | m/s |
What is velocity? | The velocity of an object is its speed in a particular direction. |
Speed = | distance / time |
Time = | distance / speed |
Distance = | speed x time |
thinking distance is | the distance it takes for the driver to think about stopping. |
Breaking distance is | the distance it takes for the car to stop once the break has been applied. |
Stopping distance | this is the total distance it takes for the car to stop. It is the sum of the thinking and breaking distances. |
Breaking distances is affected by | The weather conditions (ice, rain, etc.) , the road conditions (pot holes, gravel, tarmac, concrete, etc.), and the quality of the breaks ad tyres. |
Thinking distance is affected by | tiredness, drugs, alcohol, distractions (talking, radio, mobile phone). |