Now we know the acceleration of the falling rock. The acceleration describes the rate that the velocity changes ... See—accidental physics. Note: If you take a tiny rock and drop it, this ...

Using drizzle detectors, researchers discovered tiny raindrops falling more than 1.3 times as fast as terminal velocity, the speed at which air resistance cancels out gravitational pull.

Powdered rock (gouge) is produced continually and extruded ... models of earthquake source dynamics. For example, strong velocity weakening behaviour is usually found to be a necessary condition ...