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Speed is the rate of movement in any direction based on change in position for a change in time. Velocity is a change in speed. It is also a change in direction while the speed does not have to change.
speed or direction or both
Acceleration
Yes. An unbalanced force can make an object go faster (if the force acts in the same directon of the movement); slow it down (opposite directions), or change its direction (if force is perpendicular to the direction of movement). All of these phenomena are called "acceleration", which for a physicist means "change of velocity".
Any net force will change an object's velocity. In the case of a centripetal force, it changes the direction of the movement, and therefore its velocity.
Speed is the rate of movement in any direction based on change in position for a change in time. Velocity is a change in speed. It is also a change in direction while the speed does not have to change.
Speed is the rate of movement in any direction based on change in position for a change in time. Velocity is a change in speed. It is also a change in direction while the speed does not have to change.
Kinetic molecular theory
speed or direction or both
movement
You can't change it. The daytime changes automatically.
A change in speed or direction is caused by a force and is called acceleration.
Acceleration involves a change in velocity. In the case you mention, the speed doesn't change, but the velocity does. The term "velocity" includes the direction of the movement, and the direction does change.
Yes. They accelerate (change the direction of their movement) towards Earth, and this may be labelled as "falling".Yes. They accelerate (change the direction of their movement) towards Earth, and this may be labelled as "falling".Yes. They accelerate (change the direction of their movement) towards Earth, and this may be labelled as "falling".Yes. They accelerate (change the direction of their movement) towards Earth, and this may be labelled as "falling".
Tornadoes change direction all the time. All that happens is the tornado goes somewhere other than where it was originally headed. It is impossible for a humans to change a tornado's direction.
Yes. Since the direction of the movement changes, that means there is an acceleration. Remember, acceleration is a change in velocity; velocity includes both a magnitude and a direction.Yes. Since the direction of the movement changes, that means there is an acceleration. Remember, acceleration is a change in velocity; velocity includes both a magnitude and a direction.Yes. Since the direction of the movement changes, that means there is an acceleration. Remember, acceleration is a change in velocity; velocity includes both a magnitude and a direction.Yes. Since the direction of the movement changes, that means there is an acceleration. Remember, acceleration is a change in velocity; velocity includes both a magnitude and a direction.
curves are provided in the change of direction of the alignment. It provides in smooth movement of traffic.