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Acceleration is a change in velocity with respect to time. Velocity is a vector quantity, meaning it has both a direction and a speed. Acceleration is therefore also a vector quantity. So if you change the direction an object is moving without changing its speed, you are still accelerating the object.
The best example of this is circular motion. If you tie a string to a rock and swing around your head at a steady rate, the speed of the rock stays the same but its direction is continually changing. It is accelerating, and the acceleration vector points directly to the center of rotation.
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What kind of motion does the speed and direction not change?
Acceleration in motion refers to a change in speed or direction of that object's motion. So a type of motion in which speed and direction do not change is a motion in which the acceleration is constant (i.e. unchanging).
A change in speed or direction?
A change in speed or direction is caused by a force and is called acceleration.
What is a change in speed or direction?
Acceleration
If light traveling through air is then passed through glass what is the result?
the light slows in speed and refracts due to glass being denser than air.
Why does the ray not change direction when it enters the glass at A?
sublimation
What is the formula of accelation?
The change in the speed or velocity of the body is a accelation, accelation are of two types one is uniform accelation and and non uniform accelation...
What formula is used to calculate accelation?
Change in velocity / time
What is the formula you use to determine the accelation of an object moving in straight line?
Change in velocity over the change in time
What is constant acceleration due to only a change in direction?
Centripetal acceleration
What is changed to cause refraction?
Refraction is a change in direction of a wave due to a change in its transmission medium.
Why might someone want to change the direction of a force they apply?
If the work that they want to do is not being accomplished, they may want to change the direction of force. They may also want to change the direction of force due to space constraints.
Is acceleration due to change in direction?
Acceleration is defined as the change in velocity, and is a result of a force being applied on the object in question. Acceleration will not always result in an object changing direction, but it is capable of it (in the case of centripetal acceleration, all it does is change the direction.) Acceleration is a vector, therefore a direction must always be given when a value is stated.
Which example describes constant acceration due only to a change in direction?
Centrepetal force-orbits E.G. Earth orbits the sun at a constant speed but also changes its direction, thus its velocity. This means that the almost constant change in velocity causes there to be a constant acceleration because of the change on direction.
Can a particle moving with uniform speed along a curved path have acceleration?
Yes, due to its change in direction of motion.
A Foucault pendulum appears to change its direction of swing due to the?
rotation of earth
Under what circumstances can an object move in a circular path without being accelerated?
It can't. If there is a change in direction, there is a change in velocity ("velocity" includes the direction), and therefore, an acceleration.It can't. If there is a change in direction, there is a change in velocity ("velocity" includes the direction), and therefore, an acceleration.It can't. If there is a change in direction, there is a change in velocity ("velocity" includes the direction), and therefore, an acceleration.It can't. If there is a change in direction, there is a change in velocity ("velocity" includes the direction), and therefore, an acceleration.
What causes a spaceshuttle to change in velocity by change in direction?
A change in velocity constitutes a change in direction because velocity includes direction.
