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A student stands on the seat of a chair then steps down onto the floor of a classroom.

What is the fundamental force that causes the student to come to a stop as they contact the floor?

A

The force of gravity attracting the atoms in the floor to the atoms in the student’s shoes.

B

The electromagnetic repulsion between the atoms in the floor and the atoms in the student’s shoes.

C

The strong nuclear attraction between protons in the floor and protons in the student’s shoes.

D

The weak nuclear attraction between protons in the floor and neutrons in the student’s shoes.

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