Final answer:
An object's position and velocity change as the object accelerates. Acceleration is the rate at which velocity changes, and the direction of acceleration determines whether the velocity increases or decreases. The relationship between acceleration, velocity, and position can be described by the equation v = u + at.
Step-by-step explanation:
An object's position and velocity change as the object accelerates. Acceleration is the rate at which velocity changes. When an object accelerates, its velocity increases or decreases depending on the direction of acceleration. If the object is moving in the same direction as the acceleration, its velocity increases. If the object is moving in the opposite direction as the acceleration, its velocity decreases.
A specific example would be a car accelerating from rest. As the car accelerates, its velocity increases. If the car is accelerating forward, the velocity will increase in the positive direction. On the other hand, if the car is accelerating backward, the velocity will increase in the negative direction.
This relationship between acceleration, velocity, and position can be described by the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time taken. This equation shows how the velocity changes with time due to acceleration.