Atoy car engine pushes it forward at a constant speed. what happens if the force provided by the engine decreases?

a. the toy car speed remains constant
b. the toy car mass mass increases
c. the toy car gains inertia
d. the toy car state of motion changes

what was the answer?

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.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide