physics........?
give two examples of contact forces you observe in everyday life, and explain why you think these are forces.
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give two examples of contact forces you observe in everyday life, and explain why you think these are forces.
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a force is simply a cause of change of motion. A contact force is something that requires contact such as a puch on a table. An example of a non-contact force is gravity becuase it is not "touching" anything.
Opening a door, you are applying direct force in making it change direction and speed.
Moving a computer mouse; you are applying direct force in making it change speed and direction.