You are standing in a moving bus,facing forward,and you suddenly fall forward as the bus comes to an immediate stop.The force acting on you that causes you to fall forward is
A) the force of gravity.
B) the normal force due to your contact with the floor of the bus.
C) the force due to static friction between you and the floor of the bus.
D) the force due to kinetic friction between you and the floor of the bus.
E) No forces were acting on you to cause you to fall.

Question

Quizplus · Accepted Answer

When the bus comes to an immediate stop, your body tends to continue moving forward due to inertia, not because of any external force acting on you in the forward direction. This is an example of Newton's first law of motion, which states that an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced external force. In this scenario, no external forward force is acting on you; you fall forward because the bus stops moving and your body tries to maintain its state of motion.

You Are Standing in a Moving Bus,facing Forward,and You Suddenly