Force and Motion Concepts Quick Check

Question

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Question
A child is on a playground they start to slide down a large slide. At what point is the child in dynamic equilibrium with the slide?(1 point)
Responses

When the child pushes themselves down the slides.
When the child pushes themselves down the slides.

As the child is in motion as they are sliding down.
As the child is in motion as they are sliding down.

When the slide ends and the child has stopped moving .
When the slide ends and the child has stopped moving .

The child will not reach dynamic equilibrium.
The child will not reach dynamic equilibrium.
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Answer 1

Dynamic equilibrium occurs when an object is in motion at a constant velocity and there are no net forces acting on it. In the context of the child sliding down the slide:

• When the child pushes themselves, they are exerting a force, which means they are not in dynamic equilibrium.
• As the child is sliding down, they are in motion, but there are forces such as gravity and friction acting on them, so they are not in dynamic equilibrium either.
• When the slide ends and the child has stopped, they are not in motion, indicating static equilibrium instead.

Since the child will not reach a state where the forces are balanced while sliding down (since they are constantly accelerating), the correct response is:

The child will not reach dynamic equilibrium.