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Q: Under what conditions is the magnitude of average velocity of an object equal to its average speed?

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The velocity of an object has two attributes, 1. its magnitude and 2. its direction. The difference betwen the velocity and the magnitude of the velocity is the direction!

That would be the case if the object moved only among a straight line, and only in one direction (i.e., it didn't move back and forth).

magnitude of the object's acceleration

If the object begins from rest and a constant force is applied to it, then at the end of one second, the magnitude of its velocity is numerically equal to the magnitude of its average acceleration, although the units are different.

Acceleration is the change in velocity of an object over time. Take note that velocity is a vector quantity which means that it has magnitude and direction...Thus...An object undergoes acceleration when:1. there is a change in the magnitude of the velocity (speed) of an object.2. there is a change in direction of an object.3. it changes both in direction and magnitude.

1. magnitude of distance covered is equal to the magnitude of displacement. 2. the motion of the object is in a straight line i.e. in a particular direction.

That's the magnitude of its acceleration.

That's the magnitude of its acceleration.

That's the magnitude of its acceleration.

The definition of speed is the size/magnitude/measure of an object's velocity. Average speed = distance divided by time

Always.

"Acceleration" implies that the velocity changes.

The speed and direction of an object combine to give its velocity with the speed being equal to the magnitude of the velocity.

If the velocity is zero, the object is not moving. So if it moves at all, it is changing direction.

Velocity is a vector quantity in which both magnitude and direction must be taken into consideration. For an object to have constant velocity, it is necessary that both the magnitude and the direction of the velocity must be constant. Even if either magnitude or direction is variable, velocity will not remain constant. On the other hand, speed remains constant if direction is changed and magnitude is kept constant, as speed is a scalar quantity.For an object to have constant velocity, it is necessary that the object move at a constant speed and not change course. That object must move in a straight line to have a constant velocity.

The magnitude and direction of the object's velocity vector.

The object is moving in a path that keeps curving. Since its speed (magnitude of velocity) is constant, its path would be circular.

the velocity of an object is the size of the speed/magnitude plus the direction it is going in

Yes. Velocity implies both a magnitude and a direction. An object going around in a circle moves at a constant speed, but the direction, and therefore the velocity, is changing.Yes. Velocity implies both a magnitude and a direction. An object going around in a circle moves at a constant speed, but the direction, and therefore the velocity, is changing.Yes. Velocity implies both a magnitude and a direction. An object going around in a circle moves at a constant speed, but the direction, and therefore the velocity, is changing.Yes. Velocity implies both a magnitude and a direction. An object going around in a circle moves at a constant speed, but the direction, and therefore the velocity, is changing.

No. Speed is the magnitude of the velocity. If either or both the speed and direction vary, the velocity is not constant.

Then you can say that the object's speed and the magnitude of its velocity are constant, and the magnitude of its acceleration is zero.

yes

a magnitude - the quantity representing how fast an object is moving

Velocity is a vector quantity. That means it has direction and magnitude. Speed is a scalar quantity, it only has magnitude. It is possible to have constant speed and constant velocity but it is also possible to have constant speed but changing velocity if the object is changing direction.

The velocity can still change, even if the speed doesn't. This is because velocity is a vector - not only the magnitude is important, but also the direction.