Question

The picture shows a physics lab set up. Why does the disc fall straight down into the glass when we quickly pull the index card away from the glass in a horizontal direction? (1 point) Responses kinetic friction kinetic friction equilibrium equilibrium inertia inertia static friction

Answers

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Answered by GPT 3.5
The correct response is inertia.

Inertia is the tendency of an object to resist changes in its state of motion. When the index card is quickly pulled away from the glass in a horizontal direction, the disc initially stays in its place due to static friction between the card and the disc. However, once the card is removed, there is no longer any force acting on the disc in the horizontal direction. As a result, the disc continues to maintain its state of rest in the horizontal direction but falls straight down into the glass due to the force of gravity. This is because the disc's inertia keeps it moving in a straight line unless acted upon by an external force.