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The force necessary to release the applied brakes on a subway car is supplied by the ________.
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The force necessary to release the applied brakes on a subway car is supplied by the ________.

User Sir
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Final answer:

The force necessary to release the applied brakes on a subway car is supplied by friction.

Step-by-step explanation:

The force necessary to release the applied brakes on a subway car is supplied by friction. When the brakes are applied, the brake pads press against the wheels, creating friction. This frictional force acts in the opposite direction of the motion of the subway car, eventually bringing it to a stop.

User Polv
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