which statement best describes why a machine is useful?\na machine does a greater amount of work than the…

which statement best describes why a machine is useful?\na machine does a greater amount of work than the amount of work that is done on it.\na machine does a smaller amount of work than the amount of work that is done on it.\na machine can decrease both the input force and the input distance needed to do a given amount of work.\na machine can decrease either the input force or the input distance needed to do a given amount of work.

which statement best describes why a machine is useful?\na machine does a greater amount of work than the amount of work that is done on it.\na machine does a smaller amount of work than the amount of work that is done on it.\na machine can decrease both the input force and the input distance needed to do a given amount of work.\na machine can decrease either the input force or the input distance needed to do a given amount of work.

Answer

Brief Explanations:

Machines work based on the principle of conservation of energy. They cannot do more work than the work done on them. They can change the way work is done by reducing either the input force or the input - distance for a given amount of work, not both simultaneously.

Answer:

A machine can decrease either the input force or the input distance needed to do a given amount of work.