The initial velocity in this problem is zero because the car started from rest, which means no motion. Another example of initial velocity is when there is a free kick in a soccer game and the ball is on the ground. Then a soccer player goes towards the ball to kick it. The initial velocity is zero because the ball was at rest, so since it’s at rest, the Physics initial velocity is equal to zero. Final velocity is an object’s velocity at the end of the motion. An example of final velocity is if a person starts running for ten seconds from rest and has the velocity of 10 meters per second at the end of ten seconds, then his final velocity would be ten meters per second. Then there is average velocity, which means it is the average change in position of an object divided by time. Average velocity depends on the initial position and final position, but it doesn’t matter about the path the object traveled from its initial position to its final position. This is initial, final, and average velocity in physics and these are the terms that will help people to solve other problems.
The most crucial types of velocity there are include constant and changing velocities. People get confused between these two terms because it’s easy to get the meaning confused between them. The meaning of constant velocity is that it has a constant speed and a constant direction. The speed doesn’t increase or decrease, so since it’s constant there is no acceleration and the object does not change direction. So the basic meaning of constant velocity is moving at the same direction in a straight line and it’s going at a constant speed. An example of this is a car going at a constant speed meaning it is not accelerating or decreasing in speed and it’s going in a straight line without turning or reversing, only moving in the same direction. Then when it comes to changing velocity it means that if the direction or the speed changes that makes the velocity change. An example of this is a runner who is running three miles and he/she is running in a straight line, but he/she speeds up after running for every mile by five meters per second. Even though the direction is constant the speed is changing, which causes the velocity to change. These are the two types of velocities people get confused on because of their meaning.