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Description
Flashcards by aya abdul-khaliq, updated more than 1 year ago
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Created by aya abdul-khaliq
over 6 years ago
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| Question | Answer |
| Define the terms: Distance | A measurement of how far apart objects are |
| Displacement | A measurement of the change in position of a moving body |
| What is the measure of how fast something is moving? |
speed
Image:
Speed (binary/octet-stream)
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| What is meant by average speed? | Measure of how fast something moves overall |
| What does an average speed not show? | Indication of how slowly or how quickly you may have travelled in a trip. or How long you were caught in a traffic jam or stopped at traffic lights. |
| Define the term: Instantaneous speed | Your speed at a particular instant |
| What does the change in frequency allow? | It allows the exact speed of the car to be calculated |
| What does a motion sensor send out? | It sends out pulses of radiation such as ultrasonic sound waves, microwaves or infra red radiation. |
| What do motion sensors provide to drivers of vehicles? | Information about how close they are to a barrier |
| what is a ticker timer? |
Another device that could also be used to measure speed
Image:
Tick (binary/octet-stream)
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| What is reaction time? | The length of time it takes a driver to respond to a hazard |
| What is a reaction distance? | The distance traveled while a driver responds to a hazard |
| What can distractions be caused by while driving? | 1. Speaking or texting on a mobile phone 2. talking to others 3. changing the radio station |
| How do you calculate average speed, distance and time? | Enter text here... |
| What is a slope also known as? | Gradient |
| What are some ways to measure speed? | A mobile speed camera-fixed speed camera,multi flash photograph and ticker timer |
| What are some factors that can influence a drivers reaction time? | Persons age, fatigue and drug intake(alcohol) |
| What does a speed time graph show? | It shows how an objects speed changes over time |
| How do you convert km/s to m/s and m/s to km/s? | Km/h to m/s (divide 3.6) M/s to km/h ( multiply 3.6) |
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