View the graph of a ball rolling on a ramp. Which statement is true of the motion of the ball? Question 1 options: The ball is accelerating as the velocity is decreasing at a constant rate. The ball is not accelerating as the velocity is decreasing. The ball is accelerating as the velocity is increasing at a constant rate. The velocity is constant, so the ball is not accelerating.

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Physics

Danica

10 May, 23:20

View the graph of a ball rolling on a ramp. Which statement is true of the motion of the ball? Question 1 options: The ball is accelerating as the velocity is decreasing at a constant rate. The ball is not accelerating as the velocity is decreasing. The ball is accelerating as the velocity is increasing at a constant rate. The velocity is constant, so the ball is not accelerating.

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Emilee Gibbs · Answer 1

The figure is missing, but I assume that the ball is rolling down the ramp.

In this situation, the correct answer is:

"The ball is accelerating as the velocity is increasing at a constant rate"

In fact, there is one force acting on the ball along the direction of the inclined plane, and this force is the component of the weight parallel to the inclined plane.

For Newton's law, when a net force is acting on an object, the object has an acceleration:

F=ma

in particular, in this case the acceleration is constant, because the component of the weight parallel to the inclined plane does not change.

Summarizing, the ball is accelerating (because of the force acting on it) and its velocity is increasing.