Which of the following is a cause for limitations of scientific models?
a. they are never based on experimentation.
b. they are used for prediction.
c. it is not possible to change scientific models.
d. they are based on current knowledge.?

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.