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The only way light can speed up is if it passes from a more-optically-dense
medium to a less-optically-dense one, like from glass into air, or from air into
vacuum.
When that happens, if the light doesn't hit the boundary in the direction that's
perpendicular to it, then the light will change direction.
That's how lenses work.
What else can I help you with?
Why is it When light hits a different surface it will slow down or speed up causing it to change direction?
Because the light travels into a more or less DENSE surface it speeds up or slows down, causing the change of direction
Describe the to ways in which velocity can change?
Velocity can change by either changing the speed of an object or changing its direction of motion. If an object speeds up or slows down, its velocity will change. Similarly, if an object changes its direction, its velocity will also change.
What is the rate of change of velocity which occurs if an object speeds up changes direction or slows down?
Any change in velocity, whether to speed up, slow down, or just change direction, results from acceleration. Acceleration is an expression of the rate of change of velocity.
What speeds a chemical change up?
catalyst speeds up chemical change
A change in what indicates the acceleration of an object?
A change in velocity of an object indicates acceleration. Acceleration can occur when an object speeds up, slows down, or changes direction. It is a vector quantity that includes both the rate of change of speed and the direction of the change.
What happens when a moving object speeds up slows down or changes directions is it acelleration?
Yes, changes in an object's speed, direction, or both involve acceleration. Acceleration is the rate of change of an object's velocity over time, where velocity includes both speed and direction. So, any time an object speeds up, slows down, or changes direction, it is experiencing acceleration.
In what ways can a change in velocity Be an acceleration?
A change in velocity can be an acceleration when the speed or direction of an object changes. If an object speeds up, slows down, or changes its direction, then it is experiencing acceleration. Acceleration is a vector quantity that includes changes in both speed and direction.
Why does refraction happen whe wearing glasses?
When wearing glasses, refraction occurs because the light rays passing through the lenses of the glasses change direction as they move from one medium (air) to another medium (glass). This change in direction helps to focus the light onto the retina of the eye, correcting vision problems such as myopia or hyperopia.
What is the change in velocity other than speed what else?
change in velocity can also occur with change in direction as it is a vector with speed and direction; so a satellite may have constant speed but remaining in orbit has a centripetal acceleration; its direction is changing.
Why is velocity changing?
Velocity can change due to a change in speed or direction of an object. It can also change if there is a force acting on the object, causing it to accelerate or decelerate. In simpler terms, velocity changes when an object speeds up, slows down, or changes direction.
When light is incident on a boundary between two mediums it often slows down or speeds up. when it does this the path the light travels can change. this is called?
refraction
What changes in motion can result in a changes in velocity?
Any change in motion (direction or speed) is a change in velocity.Velocity is a vector quantity which means that it has a magnitude and a direction.
