kayyy these are some hwk questions i dont understand. plz help 1. A person has a choice of either pushing or pulling a sled at a constant velocity. Friction is present. If the angle beta is the same in both cases, does it require less force to push or pull? explain. I belive it'd be equal because it's the same angle. Am I wrong? 2. A cup of coffee is sitting on a table in an airplane that is flying at a constant altitude and a constant velocity. The coefficient of static friction between the cup and the table is 0.30. Suddenly, the plane accelerates, its altitude remaining the same. What is the max acceleration that the plane can have without the cup sliding backward on the table? 3. A box is sliding up an incline plane that makes an angle of 15 degrees with the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.50 m/s. How far does the box travel along the incline before coming to rest? Please help guys! Thanks! /prettynerd.