You increase the frictional force by applying the brakes.
as you decrease the velocity of a car, you decrease the kinetic energy.
The decrease in magnitude velocity refers to the reduction in the speed of an object or particle. It indicates the change in the object's velocity moving towards a slower speed.
When a car is moving with constant velocity, the speedometer needle will stay steady at a particular speed. When the car is accelerating, the needle will move clockwise indicating an increase in speed. When the car is decelerating, the needle will move counterclockwise indicating a decrease in speed.
If the speed of the car is decreasing while the car is still moving in a straight line, this means that the velocity and acceleration are in the same direction. This is because the car is decelerating, which results in a negative acceleration in the same direction as the velocity. This negative acceleration causes the speed of the car to decrease over time.
When a car is moving with constant velocity, the speedometer needle will remain steady and point to a consistent speed. When the car speeds up, the needle will move clockwise to reflect the increase in speed. Conversely, when the car slows down, the needle will move counterclockwise to indicate the decrease in speed.
Uniform Constant Deceleration
There is only acceleration if the car's velocity changes. If it moves at a constant velocity, then there is no acceleration.
A fast-moving car has more momentum than a slow-moving car because momentum is directly proportional to an object's velocity. The momentum of an object is the product of its mass and velocity, so the faster the object is moving, the greater its momentum.
An example of a car moving at constant speed and constant velocity would be a car driving along a straight road with no change in direction, where the speedometer shows a steady reading, and there are no changes in velocity or direction of motion. This means the car is moving at a consistent speed in a straight line without any acceleration or deceleration.
Positive velocity can be in any direction as long as the object is moving in that direction. For example, a car moving northward has a positive velocity in the north direction.
The velocity of a moving car is a vector quantity that includes the speed and direction of the car's motion. It can be positive, negative, or zero, depending on the direction the car is moving. It is typically measured in units such as meters per second or miles per hour.
No, if the car is moving at a constant velocity, there is no need to lean in any special way to compensate for its motion. Your body is also moving at the same constant velocity as the car, so you will not feel any effect of the motion.