(Question)
Answer the following question given this paragraph: In a wheel and axle, force may be applied either to the wheel or to the axle. This force is called the input force. A wheel and axle does not change the direction of the input force. However, the force put out by the machine, called the output force, is either greater than the input force or else applied over a greater distance. Q: What is the term for the force applied to a wheel and axle? Choices: - velocity force - momentum - output force - input force A:
(Answer)
input force

(Question)
Answer the following question given this paragraph: Q: The medieval catapult has a heavy ballast on one end and what on the other end? Choices: - fragment - pivot - propellant - projectile A:
(Answer)
projectile

(Question)
Answer the following question given this paragraph: Lipids are biochemical compounds such as fats and oils. They consist of fatty acids, which may saturated or unsaturated. Lipids are used to store energy. They also make up cell membranes. Q: What are biochemical compounds, such as fats and oils, that consist of fatty acids and store energy? Choices: - proteins - oils - tissues - lipids A:
(Answer)
lipids