level: Level 1
Questions and Answers List
level questions: Level 1
| Question | Answer |
|---|---|
| what is a scalar | something represented by numbers with no direction such as volume, density and mass |
| what is a vector | something with direction |
| what is conservation of mass | the system's mass cannot change, so quantity can neither be added nor be removed. |
| what is newtons second law | force = mass x acceleration (f=ma) |
| how big is an atom | 0.1 nm |
| equation for density | p = m\v p = density m = mass v = volume |
| what does a distance time graph show | speed and direction over a specific period |
| equation for speed | distance\time |
| how is acceleration measured using light gates | using light beams as the object passes through it is detected through the first light then the second and the time in between them is divided by the distance |
| area equation | width x length |
| how is perimeter found | sum of all sides |
| what is the gradient of a triangle with a rise of 500mm and 10m run | 5 10m = 10000mm 500\10000 = 0.05 x100 =5 |