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.
1 What force is needed to accelerate a 1,000 kg car from 72 to 108 km/hr over a time period of 5 s? Answer.  An unbalanced force of 18 N is needed to give an object an acceleration of 3 m/s2. What force is needed to give this very same object an acceleration of 10 m/s2?