The time it takes a car to attain a speed of 30 m/s when accelerating from rest at 2 m/s² is A)2 s. B)15 s. C)30 s. D)60 s. E)none of the above

Question

Quizplus · Accepted Answer

To find the time it takes for the car to reach a speed of 30 m/s when accelerating at 2 m/s^2, we use the formula $v = at$, where $v$ is the final velocity (30 m/s), $a$ is the acceleration (2 m/s^2), and $t$ is the time. Solving for $t$, we get $t = v/a = 30/2 = 15$ seconds.

The Time It Takes a Car to Attain a Speed