3954811
Description
Flashcards by katie Dack, updated more than 1 year ago
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Created by katie Dack
about 9 years ago
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| Question | Answer |
| write out the distance, speed and time triangle equation | |
| write out the acceleration equation | |
| what is speed? | speed tells you how fast something moves. it must be given in a unit to tell you what it is measured in? |
| a car that travels 15 meters in one second would have a speed of what? | 15m/s |
| what do the units m/s stand for? | they stand for meters per second |
| the unit we usually use for a car is miles per hour what is the symbol for this? | MPH |
| In France and other countries they use which unit to measure the distances of a car? | the speed of the car is measured in kilometres per hour |
| what is the symbol for kilometres per hour? | Km/h |
| on a ticker tape machine how do the dots show that the speed is going slower and faster? | it shows by the dots being close together which means the speed is slow, and the further distance between the dots means the speed is going fast. |
| what is a independent variable? | it is what you change? |
| what is the independent variable on the ticker tape machine? | the speed of the pull |
| what is a dependent variable? | it is what changes. |
| what is the dependent variable on the ticker tape machine? | the spacing of the dots |
| what is the control variable? | it is what stays the same |
| if smoother the surface what happens to the friction | the smoother the surface there is less friction |
| what is the control variable on the ticker tape machine? | the frequency of dots printed |
| state the 3 different units for speed? | miles per hour, kilometers per hour and meters per second |
| what is meters per second in a symbol? | |
| what does terminal velocity mean? | it means constant speed. |
| show with drawing arrows what the size of terminal velocity looks like (arrows)? | it is a constant speed so has equal arrows facing north and south. |
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