A bird is flying with an initial velocity of 10 m/s. It accelerates uniformly and covers a distance of 25 m to reach a final velocity of 15 m/s. Calculate the acceleration of the bird.

Initial velocity, $u = 10 \text{ m/s}$
Final velocity, $v = 15 \text{ m/s}$
Distance covered, $s = 25 \text{ m}$

We need to find the acceleration ($a$). The kinematic equation that relates initial velocity, final velocity, acceleration, and distance is:

Subtract $100 \text{ m}^2/\text{s}^2$ from both sides:

Divide by $50 \text{ m}$:

The calculated acceleration is $2.5 \text{ m/s}^2$, which corresponds to option (c).

The magnitude of the acceleration of the bird is $\text{c) } 2.5 \text{ m/s}^2$.