A particle is moving in a straight line such that the distance covered by it in t seconds from a point is `((t^(3))/(3)-t)` cm. find its speed at t=3 seconds.

Explanation

To find the speed of the particle at \( t = 3 \) seconds, we will follow these steps:

### Step 1: Write down the distance function
The distance \( s(t) \) covered by the particle in \( t \) seconds is given by:
\[ s(t) = \frac{t^3}{3} - t \text{ cm} \]

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