1 Many instances of performance-based design are approved for their adherence to safety principles. 2  Ceremony implies honor, and honor implies an adherence to traditions. Many instances of performance-based design are approved for their adherence to safety principles. 2  Ceremony implies honor, and honor implies an adherence to traditions.
Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity. Sports announcers will occasionally say that a person is accelerating if he/she is moving fast. Yet acceleration has nothing to do with going fast.
Acceleration is the rate at which velocity (speed) is changing. If an object is moving with a constant velocity, then its acceleration is zero, since the velocity never changes.But imagine a car going along at 30 mph (miles per hour).When we check the speed one second later, we find the speed is now 32 mph. So in that one second, the speed increased by 2 mph.ut imagine a car going along at 30 mph (miles per hour). When we check the speed one second later, we find the speed is now 32 mph. So in that one second, the speed increased by 2 mph.