Question

A crate is at rest on the ground. What force or forces are acting on the crate?
A.
There are no forces acting on the crate.
B.
The weight of the crate is acting downward on the crate.
C.
The ground is exerting a force equal to the weight of the crate upward on the crate.
D.
The weight of the crate is acting downward on the ground and the ground is exerting a force equal to the weight of the crate upward on the crate.

Answer 1

B.  

The weight of the crate is acting downward on the crate.

Answer 2

D! The crate is pushing down on the ground, but because of Newton’s Laws we know that the ground is pushing back onto the crate.