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
static friction
static friction
inertia
inertia
1 answer
The correct response is inertia.
When you quickly pull the index card away, the disc remains in its state of rest due to inertia (Newton's first law of motion). Since the force of gravity acting on the disc is much stronger than any horizontal force it may experience from the card, the disc falls straight down into the glass.
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1 answer
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