Train acceleration from 10 m/s to 30 m/s in 5 seconds

Practice question

Question

A train accelerates uniformly from 10m/s to 30m/s in 5s. What is its acceleration?

Options

Choose one · Correct answer highlighted

4 m/s² Correct 6 m/s² 2 m/s² 8 m/s²

Explanation

Use a=v−v0t. Here, v=30m/s, v0=10m/s, t=5s. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 4 m/s² as the result, so option A is correct.

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