A hockey puck slides across the ice at a constant speed. Which of the following is true?

1. It is in equilibrium.

2. The puck is at rest.

3. The puck is moving and thus not in equilibrium.

4. None of these

5. The puck can be considered neither at
rest nor in equilibrium.

Most short-period comets do not have randomly oriented orbits because

Which word expression describes how much to calculate pressure

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe