A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to

A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to 

(1) Outward pull on him 

(2) Inertia of motion 

(3) Change in momentum 

(4) Change in acceleration 


Answer: (2) This is the inertia of direction. It is the ability of the body to be in a state of the direction of motion .for example sun holds planets in a fixed elliptical path .this is one of the examples of inertia of direction. The inertia of direction is non-existent however inertia only applies to a body at rest or moving with a constant velocity. It is the property possessed by a body to resist change. In another way, we can say that if a body moves in a particular direction under the action of a force and if the force is removed then the will continue to move in the same direction unless stopped under the action of another opposing force for a body at rest it under the inertia of rest whereas inertia of motion is for bodies in motion. 

A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to   (1) Outward pull on him   (2) Inertia of motion   (3) Change in momentum   (4) Change in acceleration


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