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A car starts from rest and has an acceleration of 6 m/s² - Leaving Cert Physics - Question (b) - 2021

Question (b)

A car starts from rest and has an acceleration of 6 m/s². Calculate the distance it travels in 12 s.

Worked Solution & Example Answer:A car starts from rest and has an acceleration of 6 m/s² - Leaving Cert Physics - Question (b) - 2021

Step 1

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Answer

We know the following variables:

Step 2

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The equation to calculate distance ( $s$ ) when starting from rest is:

$s = ut + \frac{1}{2} a t^2$ Substituting the known values:

$s = 0 \cdot 12 + \frac{1}{2} (6) (12)^2$

Step 3

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Answer

Now we can simplify the equation:

$s = 0 + \frac{1}{2} (6) (144)$ $s = 3 \cdot 144 = 432 m$

Step 4

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Answer

The distance traveled by the car in 12 seconds is 432 meters.

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