# Is acceleration constant when velocity is constant?

By definition,

**acceleration**means change in**velocity**. So if the**velocity is constant**, this means both speed and direction are**constant**. And there has to be at least one of these things changing for the**velocity**to change, the**acceleration**is**zero**if none of these things change and the**velocity**is said to be**constant**.A.

### Why is velocity constant?

To say that an object has

**constant velocity**means that it is moving along a straight line, and as every second of time goes by, the object travels through the same number of meters. Or we could say that it travels equal displacements per equal time intervals.#### Are constant velocity and uniform velocity the same?

The body can be said to be moving with**constant velocity**if it travels on a straight path with**constant speed**. When a body performs motion with**uniform velocity**, magnitude of the**velocity**will remain**same**but direction may change.#### Can there be a negative constant velocity?

**Constant Negative Velocity**. Observe that the object below moves with a**constant velocity**in the**negative**direction. The**velocity**-time graph shows a horizontal line with zero slope (meaning that there is zero acceleration); the line is located in the**negative**region of the graph (corresponding to a**negative velocity**).#### What is velocity constant in chemical kinetics?

In chemical kinetics a reaction rate constant or**reaction rate coefficient**,**k**, quantifies the rate of a chemical reaction. the reaction rate is often found to have the form: Here**k**(**T**) is the reaction rate constant that depends on**temperature**.

B.

### What is the acceleration of an object if its velocity is constant?

Therefore, at a

**constant**speed (meaning no change in the magnitude of the**velocity**) an**object**could be changing**its**direction, and thus,**accelerating**. On the other hand, a**constant velocity**means no change in**velocity**(both magnitude and direction), so in this case the**acceleration**must be zero (no**acceleration**). 34.)#### Is it possible to have a changing speed and a constant velocity?

**Speed**is a magnitude of**velocity**, and so if the magnitude**changes**, then the**velocity**also has to**change**. But, the reverse case is**possible**: an object can**have**a**constant speed**but ever**changing velocity**.**Speed**2. Direction if any of this or both alters**velocity changes**.#### Can the acceleration be perpendicular to the velocity?

However, if the**acceleration**is always**perpendicular**to the**velocity**, the**velocity will**change direction without change it's magnitude. This is the circular motion. So, for circular motion, the force(**acceleration**) always**perpendicular**to it's**velocity**.#### What is the constant velocity?

Furthermore, when an object travels the same distance every second, then the object is said to be moving with**constant velocity**. This means that the magnitude of the**velocity**(or speed) and the direction of the**velocity**both remain**constant**.

C.

### Is constant speed and velocity the same thing?

To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a

**constant speed**. While the**speed**of the object**is constant**, its**velocity**is changing.**Velocity**, being a vector, has a**constant**magnitude but a changing direction.#### What is the difference between speed and velocity?

In the end, this is major**difference**between**Speed and Velocity**. Though both are calculated using the same units (km/h, m/s, mph, etc.), the two are**different**in that one is described using numerical values alone (i.e. a scalar quantity) whereas the other describes both magnitude and direction (a vector quantity).#### Are speed and velocity the same thing in physics?

This limit is the derivative; that is, In common, everyday English, "**velocity**" and "**speed**" mean the**same thing**. In**Physics**, there is a distinction that is sometimes useful.**Velocity**is positive if an object is moving to the right and it is negative if an object is moving to the left.#### What is the average velocity?

The**average**speed of an object is defined as the distance traveled divided by the time elapsed.**Velocity**is a vector quantity, and**average velocity**can be defined as the displacement divided by the time.

Updated: 25th November 2019