dx The coordinates of a particle in the metric xy-plane are differentiable functions of time t with dt = - 5 m/sec and dy dt = - 6 m/sec. How fast is the particle's distance from the origin changing as it passes through the point (12,5)? The particle's distance is changing at a rate of m/sec from the origin as it passes through the point (12,5). (Type an integer or a simplified fraction.)