Basically every vehicle has it but in trains/trams is it particularly strong (probably because they have so much mass).
In: Physics
Yes , it is called inertia. According to newton’s law of motion, a body will continue to have its momentum (m*v) unless it is applied a force to change this. In terms of trains, trams the braking applies the force and thus the train stops but you who was moving along with the train did not have any force acted on you, due to which you feel the bump until friction, or some other force helps you stop. This lag in coming to zero speed is the bump you face
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