* Acceleration is the rate of change of velocity. This means it describes how quickly the velocity is changing.
* Velocity is the rate of change of position. It describes how fast an object is moving and in what direction.
The Scenario:
Imagine a car moving at a constant speed of 50 mph on a straight highway.
* Velocity: The car has a nonzero velocity (50 mph).
* Acceleration: Since the car is moving at a constant speed and in a straight line, its velocity is not changing. This means the car has zero acceleration.
Why it's possible:
An object can have zero acceleration if its velocity is not changing. This can happen in several ways:
* Constant Velocity: The object is moving at a constant speed in a straight line.
* Instantaneous Equilibrium: The object is momentarily balanced, with forces acting on it cancelling each other out. This is a brief moment where acceleration is zero, even if the object was previously accelerating.
Important Note: It's impossible for an object to have nonzero acceleration and zero velocity for any sustained period. If the velocity is zero, the object is not moving, and therefore, its velocity cannot be changing, meaning acceleration must also be zero.
