A small rubber ball of mass \(0.25 \text{ kg}\) is dropped from rest from a height of \(5.0 \text{ m}\) above a hard floor. The ball collides with the floor, remains in contact with the surface for \(0.050 \text{ s}\), and rebounds vertically to a maximum height of \(1.8 \text{ m}\). Assuming air resistance is negligible and using \(g = 10 \text{ m/s}^2\), what is the magnitude of the average net force exerted on the ball during the collision?