A car starts from rest with an acceleration of 3 m/s^2 for 4 seconds. What is its final velocity?

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Multiple Choice

A car starts from rest with an acceleration of 3 m/s^2 for 4 seconds. What is its final velocity?

Explanation:
With constant acceleration, velocity changes according to v = u + a t. Starting from rest means u = 0, so v = a t. Here the acceleration is 3 m/s^2 and time is 4 s, giving v = 3 × 4 = 12 m/s. Therefore the final velocity is 12 m/s.

With constant acceleration, velocity changes according to v = u + a t. Starting from rest means u = 0, so v = a t. Here the acceleration is 3 m/s^2 and time is 4 s, giving v = 3 × 4 = 12 m/s. Therefore the final velocity is 12 m/s.

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