34. Intext question IV

 

Initially, when the bus accelerates in a forward direction from a state of rest, the passengers in the bus does not experience a force exertedexperience a force exerted on them in the forwardbackward direction due to their inertia opposing the backwardforward motion.

 

When the bus starts to move, the passengers are in a state of motionstate of rest in the forward direction. Once the brakes are applied, the bus moves towards a position of reststate of motion.

 

Now, a force in the forwardbackward direction is applied on the passengers in the bus because their inertia allowsresists the change in the motion of the bus. This results in the passengers falling forwards when the brakes are applied.