9. Ms. Ramos is moving the chemistry boxes around the prep room. One of the boxes weighs 50 kg and she exerts a force of 250N as she pushes it
down and across the floor at an angle of 45°. The coefficient of friction
between the box and the floor is 0.7.

a. What is the normal force acting on the box?

b. what is the net force on the box in the horizontal direction

Show work and be sure to label all variables and equations