Ten seconds after starting from rest, a car is moving at 40 m/s. What is the car's acceleration? A)0.25 m/s² B)2.8 m/s² C)4.0 m/s² D)10 m/s² E)40 m/s²

Question

Quizplus · Accepted Answer

The car's acceleration can be calculated using the formula:

acceleration = (final velocity - initial velocity)/time

Here, the initial velocity is 0 m/s (starting from rest), the final velocity is 40 m/s, and the time is 10 seconds.

So, acceleration = (40 m/s - 0 m/s) / 10 s = 4 m/s^2.

Therefore, choice C (4.0 m/s^2) is the correct answer.

Ten Seconds After Starting from Rest, a Car Is Moving