MadSci Network: Physics

Re: Why do we fall backwards when a bus starts and forwards when it stops.

Date: Mon Jun 15 14:03:05 1998
Posted By: Ronald Fisch, Physics, Washington University
Area of science: Physics
ID: 897706867.Ph

"A body in motion tends to stay in motion, and a body at rest tends to remain at rest." This is called inertia. In order to change the state of motion of a body, it is necessary to push or pull on it.

When the bus starts, your body tends to remain at rest, which makes you fall backwards. The seat must push on you so that you will follow along with the motion. When the bus stops, your body tends to keep moving, which makes you fall forwards.

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