A 10 Kg box is traveling at 9 m/s over a rough surface with a coefficient of kinetic friction equal to 0.3. How far does the box travel before coming to rest?

According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?

Your friend increases her force on the desk by 30n . she doesn't change the direction of her push . what happens to the net force on the desk .will the desk accelerate

If you let go of the notebook after lifting it, will it move? how?