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Q: Can the speed of a body be constant still varying its velocity?

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no.

Velocity is a vector. A vector has a magnitude and a direction. The scalar or magnitude portion of velocity is speed. Velocity is a constant only when both the speed and direction are not varying. Hence, when the speed is changing, the velocity cannot be a constant.

Yes, if you are going in a circle or otherwise changing direction.

Yes, if you are going in a circle or otherwise 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.

No, in order for the velocity to be constant, the speed has to be constant. Speed is a scalar, meaning that it is just a number. (A car goes 50 miles per hour). Velocity is a vector, which indicates that it needs a measure of its displacement and a direction. (A car is going 50 mph to the east). A body can have a constant speed but a changing velocity because the direction can change while the speed is constant. (A car goes 50 mph around a roundabout). However, a body can not have a constant velocity with a changing speed. A car can not be slowing down yet still be going the same speed and direction.

Acceleration means the velocity changes. Velocity is made up of speed and a direction, so if only the direction changes, the velocity still changes, and therefore there is acceleration. The typical example is moving around in a circle.

Acceleration is a change in velocity over time. Velocity has both speed and direction. A body moving in circular motion at constant speed is still accelerating because its direction is constantly changing. If either speed or direction changes, or if both change, the body is accelerating.

Acceleration is the rate of change of velocity (not speed). Acceleration is the rate of change of velocity over time. Velocity is defined by speed and direction. A satellite orbiting the earth at a constant speed is still accelerating because gravity is making it travel in a circle (or ellipse) and consequently its direction and therefore its velocity is constantly changing.

Speed is measured in m/s. Velocity is measured in m/s IN A SPECIFIC DIRECTION. You may be driving at 4 mph north, or at 5 mph at 330˚, and your velocity in the northern direction will still be 4 mph. In this example, your speed is different, but your velocity is the same. Thus even if speed remains constant, but its direction changes, your velocity will be different.

yes, as in the case of a satellite orbiting the earth; it is moving with constant speed but not constant velocity as its direction is always changing as it orbits. The net force is provided by gravity accelerating it inward and preventing into from flying away into space

It means they stay still, or they move at constant velocity.It means they stay still, or they move at constant velocity.It means they stay still, or they move at constant velocity.It means they stay still, or they move at constant velocity.

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