1. Cite three examples of machines used to multiply speed.
2. What name is given to the force overcome by the machine?
3. State the law of simple machines in your own words.
4. What is the term used for the ratio of the resistance force to the effort force?
5. What is the term used for the ratio of the amount of work obtained from a machine to the amount of work put into the machine?
6. Does a friction-free machine exist?