1. You are pushing a heavy box across a rough floor. When you are initially pushing the box and it is accelerating,
(a) You exert a force on the box, but the box does not exert a force on you.
(b) The box is so heavy it exerts a force on you, but you do not exert a force on the box.
(c) The force you exert on the box is greater than the force of the box pushing back on you.
(d) The force you exert on the box is equal to the force of the box pushing back on you.
(e) The force that the box exerts on you is greater than the force you exert on the box.
2. A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is 0.50. A 20-N force is applied to the crate acting to the right. What is the resulting static friction force acting on the crate?
(a) 20 N to the right.
(b) 20 N to the left.
(c) 25 N to the right.
(d) 25 N to the left.
(e) None of the above; the crate starts to move.