What force is acting on a moving bus?
What force is acting on a moving bus? The motion of a bus is resisted by mainly four forces which are: the inertial force, aerodynamic force, resistance due to the grade, and rolling resistance [6] .
What happens when a bus starts suddenly?
This is due to inertia of rest of upper part of the passengers body when the bus or train suddenly starts moving, the lower part of the passenger's body starts moving along with the bus or train while upper part of the body has a tendency to remain in the state of rest due to inertia of rest and hence falls backward.