ancillae. 1  nominative plural of. 2  genitive singular of. 3  dative singular of.  vocative plural of.
Acceleration is the time rate of change of velocity. If velocity is constant, then. acceleration is zero. Note: 100 km per h for 10 seconds is a constant speed, but not necessarily a constant. velocity, since we're told nothing about the direction.
The first law states that an object will stay at rest or at constant velocity until a force acts on it. The second law states that the acceleration of a body is equal to the force acting on the body divided by its mass. If no force acts on a body it will have no acceleration and hence either remain at rest or remain at a constant velocity.