A10 kg box is sitting on a shelf 15 ft in the air how could you increase the potential energy of the box

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?