AP Physics 1· difficulty 1/5
A book sits at rest on a table. Which statement correctly describes the forces on the book?
The table pushes harder than gravity, but they balance.
There are no forces on it because it's at rest.
Only gravity acts on it.
Gravity and the table's normal force act, summing to zero.
Explanation
At rest, . Gravity (down) and normal force (up) are equal in magnitude and opposite in direction.
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