A bus is at rest at a bus stop. As soon as it starts moving forward, passengers tend to fall backward, and when it suddenly brakes to stop, the passengers tend to fall forward.
a. (i) Describe the observations made by the passengers in both situations.
b. (ii) Explain each observation on the basis of inertia of the passengers’ bodies.
c. (iii) State two safety features installed in modern buses that help reduce injuries arising from these situations and explain how each feature works.