Simone exerts a force of 400 N on a crate to pull it along the floor at a constant
velocity.
Read these three statements and decide which of them is/are correct.
I- The crate exerts a reaction force of 400 N on Simone.
II- The frictional force must be zero since the crate exerts 400 N on Simone to
balance the forces.
III- The frictional force must be equal to 400 N.
The following statement(s) is/are correct:
A -I and II
B- II and III
С- I and III
D- I only
