PDF chapter test TRY NOW

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?
 
Initially, when the bus accelerates in a forward direction from a state of rest, the passengers in the bus  on them in the  direction due to their inertia opposing the  motion.
 
When the bus starts to move, the passengers are in a  in the forward direction. Once the brakes are applied, the bus moves towards a .
 
Now, a force in the  direction is applied on the passengers in the bus because their inertia  the change in the motion of the bus. This results in the passengers falling forwards when the brakes are applied.