A box slides across the floor for 1.5 m, and slows to a stop. The friction between the box and the floor is 10 N.
How much work did the friction do on the box? (And is the work positive or negative?)
motion
1.5 m

d. air pressure decreases as altitude increases.

im sorry i dont know

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.