What is the acceleration of a car that starts from rest and 5 seconds later reaches a speed of 20 m/s? A)1 m/s² B)2 m/s² C)3 m/s² D)4 m/s² E)5 m/s²

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Quizplus · Accepted Answer

The acceleration can be calculated using the formula $a = \frac{\Delta v}{\Delta t}$, where $\Delta v = 20 \, \text{m/s}$ (final velocity) - 0 \, \text{m/s}\) (initial velocity) = $20 \, \text{m/s}$, and $\Delta t = 5 \, \text{s}$. Thus, $a = \frac{20 \, \text{m/s}}{5 \, \text{s}} = 4 \, \text{m/s}^2$.

What Is the Acceleration of a Car That Starts from Rest