a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know
0, since speed is constant, there is no acceleration
Speed is constant and direction is not changing. Therefore acceleration is zero.
To determine the car's acceleration, we first need to understand that acceleration is the rate of change of velocity. If the car is driving at a constant speed of 55 mph in a straight line, its velocity remains constant, and therefore its acceleration is zero.
We know this because acceleration is defined as the change in velocity divided by the time it takes for that change to occur. In this case, since the car is traveling at a constant speed, there is no change in velocity, and thus the acceleration is zero.
To determine the car's acceleration, we need to know the rate at which its velocity is changing. In this case, since the car is driving at a constant speed of 55 mph in a straight line, its velocity is not changing. Hence, the car's acceleration is zero.
To understand this, it is important to distinguish between velocity and acceleration. Velocity refers to the rate of displacement of an object per unit of time, while acceleration refers to the rate at which an object's velocity changes per unit of time. In this scenario, the car's velocity remains constant, so there is no change in its velocity, and thus its acceleration is zero.
You can determine the car's acceleration by analyzing its motion over a period of time. If the car's speed or direction changes, then its acceleration is non-zero. However, in the given scenario where the car is driving at a constant speed due south, we can conclude that the car's acceleration is zero.