The picture shows a physics lab setup.
Why does the disk fall straight down into the glass when the index card is quickly pulled away from the glass in a horizontal direction?
(1 point)
Responses
Inertia
Inertia
Kinetic friction
Kinetic friction
Equilibrium
Equilibrium
Static friction
None of the above
The disk falls straight down into the glass when the index card is quickly pulled away from the glass in a horizontal direction because of inertia.
The reason the disk falls straight down into the glass when the index card is quickly pulled away from the glass in a horizontal direction is due to inertia.
Inertia is the property of matter that causes objects to resist changes in their motion. According to Newton's first law of motion, an object at rest will stay at rest and an object in motion will continue moving with a constant velocity unless acted upon by an external force.
In this scenario, when the index card is quickly pulled away, it applies a force on the disk in the horizontal direction. However, due to the disk's inertia, it resists this change in its motion and continues moving vertically downward. This is why the disk falls straight down into the glass.
To understand this concept, you can try a simple experiment. Take a small object, like a book, and place it on a table. Slide a piece of paper quickly from under the book. You'll notice that the book remains in place while the paper is pulled out, similar to how the disk falls straight down into the glass.
Therefore, the correct answer to the question is inertia.