Question

A car accelerates uniformly from rest to a speed of 20 m/s in 10 seconds. What is the car's acceleration?

• A. \( 2.0 \, \text{m/s}^2 \)
• B. \( 1.0 \, \text{m/s}^2 \)
• C. \( 0.5 \, \text{m/s}^2 \)
• D. \( 4.0 \, \text{m/s}^2 \)

Hint:

Acceleration can be calculated from the change in velocity over time. If the object is at rest initially, the formula simplifies to \( a = \frac{v}{t} \).