The position of a particle is given by `vec r =(8 t hati +3t^(2) hatj +5 hatk)` m where t is measured in second and `vec r` in meter. Calculate,
direction of the velocity at t = 1 s

Explanation

To find the direction of the velocity of the particle at \( t = 1 \) second, we will follow these steps:

### Step 1: Write the Position Vector
The position vector of the particle is given by:
\[ \vec{r} = 8t \hat{i} + 3t^2 \hat{j} + 5 \hat{k} \quad \text{(in meters)} \]

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