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.
Substituting in we have 0^2 = (30 m/s)^2 + 2 * a * (45 m) 0 = 900 m^2/s^2 + 90 m * a -90 m * a = 900 m^2/s^2 a = -10 m/s^2 So this is the car's constant rate of acceleration when the brakes are applied.