Which best compares freezing and condensation? both involve changes between liquids and gases. both involve changes between gases and solids. both involve the release of heat. both involve the absorption of heat.

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.

How are elastic and inelastic collisions different? give two or more ways. your answer should have at least 2 sentences.