centrifugal force is a force that acts perpendicular to the direction of motion of an object and keeps the object moving in a circle

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

The substances that are necessary for producing of certain hormones and that store and transport vitamins

Properties seen when one one substance changes to another are known as properties