pxt-calliope/olddocs/lessons/zoomer/quiz-answers.md

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# zoomer quiz answers
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Measure the acceleration on the micro:bit in the "z" direction.
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This is the answer key for the [zoomer quiz](/lessons/zoomer/quiz).
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## 1. What is 'acceleration'?
Acceleration is amount of force being applied to the BBC micro:bit in one of three specified directions.
## 2. Consider the following directions
Write the line of code to measure the acceleration and then store in it a variable.
<br/>
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```blocks
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let accX_ = input.acceleration("x")
```
Note: acceleration does not have be measured in the "x" direction. It can also be in the "y" or "z" direction.
## 3. Consider the following directions
After storing the acceleration in a variable, write the code to show acceleration on the BBC micro:bit as a number
<br/>
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```blocks
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let accX = input.acceleration("x")
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basic.showNumber(accX, 150)
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```
Note: make sure the same variable name ("acc x" in this case) is the same in both lines of code..