Question

Why do passengers tend to fall back when bus starts suddenly

Answer 1

due to Newton first law of motion I.e inertia as the body of passenger will be in rest and the bus suddenly get into motion. that's y.....

Answer 2

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

When passenger is sitting or standing in a stationary bus both the bus and the passenger are at rest.

When the bus starts suddenly the lower part of the passengers's body starts moving forward with the bus.

But the upper part of the body tends to remain in the state of rest due to inertia of rest.

As a result, the passengers tends to fall backwards.

_________               Thanks...✊