A body having a uniform acceleration of 10 ms-2 has a velocity of 100 ms-1. In what time its velocity will be doubled:
Correct answer: C. 10 s
- A. 8 s
- B. 12 s
- C. 10 s
- D. 14 s
Explanation
The initial velocity Vi is 100 ms-1 and the final velocity Vf is 200 ms-1 because the velocity is doubled. The acceleration a is given as 10 ms-2. Using the formula t = (Vf - Vi) / a, we calculate the time t as follows: t = (200 - 100) / 10 = 10 s. Therefore, the correct answer is 10 seconds. Other options (8 s, 12 s, and 14 s) do not satisfy this calculation.
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