Question

A man is pushing a wall with a force of magnitude 1 000 N. The magnitude of the net force on the wall is
A) 0 N
B)500 N
C) 1 000 N
D) 2 000 N

Answer 1

Dear Student
A man is pushing a wall with force of magnitude 1000 N. So as per Newton;s third law wall also exert force of 1000 N on man,
But these two forces not cancel out as both forces acts on different objects. (wall and man)

So net force on wall is 1000 N

Regards