Question

multiple choice question
a ball rolls down a straight incline ramp, increasing its speed along the way. at what position is the net force the greatest?
everywhere
the top
the bottom
the middle

Explanation:

For a ball rolling down a straight incline, the net force comes from the component of gravity parallel to the ramp ($F_{net} = mg\sin\theta$, where $m$ is mass, $g$ is gravitational acceleration, $\theta$ is the ramp angle) minus rolling friction. Since the ramp is straight, $\theta$ is constant, and rolling friction does not change with position on the ramp. Thus, the net force is identical at all points.

Answer:

Everywhere