**Can an object have constant velocity but not constant speed?** <br> The answer to the second question is **no**. Velocity means speed and direction, if the velocity is constant, then that means both speed and direction are constant. If speed were to change, then the velocity vector’s magnitude would change (by definition), which immediately implies that the vector changes.

**Can object have varying speed without wearing velocity?** b) with zero speed may have non-zero velocity, c) with constant speed must have zero acceleration, d) with positive value of acceleration must be speeding up. (I) **varying speed without having varying velocity.**

**Can an object have varying speed without having varying acceleration?** correct Answer : b and d

In a uniform circular motion velocity varies but speed remains constant . Since velocity varies acceleration is non zero. So b and d are correct. **Without changing in varying velocity, we cannot have acceleration**.

**Can a object have non zero acceleration without having varying speed?** non-zero acceleration without having varying velocity. non-zero acceleration without having varying speed. Solution : b,d. **A body moving on a circular path with uniform speed must <br> have varying velocity as well as acceleration**.

## Can an object have constant velocity but not constant speed? – Additional Questions

### Does constant speed mean constant velocity?

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.

### Can you have a change in velocity without a change in speed?

Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. **If you’re not changing your speed and you’re not changing your direction, then you simply cannot be accelerating**—no matter how fast you’re going.

### What causes velocity to not be constant?

In other words, **a force** is that which causes a change in velocity, or acceleration.

### Why does velocity change but speed doesn t?

The reason is simple. **Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement**.

### How can velocity change even if speed stays the same?

How can velocity change even if speed stays the same? velocity can change **if an object changes direction** because velocity depends on both the speed of the object and the direction of its motion.

### What are 5 differences between speed and velocity?

Velocity is direction-aware and it is the rate of change of position of an object. Speed is a scalar quantity, i.e., it has only magnitude. Velocity is a vector quantity, i.e., it has both magnitude and direction. Speed measures the distance traveled (d) over the change in time (Δt).

### Can the average speed ever be zero?

**The average speed cannot be zero unless the body is stationary over a given interval of time**. Average speed is the ratio of the total distance travelled by a body to the total time interval taken to cover that particular distance.

### Can velocity be negative?

Velocity: The velocity of an object is the change in position (displacement) over a time interval. Velocity includes both speed and direction, thus **velocity can be either positive or negative** while speed can only be positive. Another way to say this is that speed is the absolute value of velocity.

### Why can’t an object have a negative speed?

Speed = Distance travelled/Time taken

The ratio of distance travelled and the time taken by a body can be zero but not negative. **Since distance and time are positive quantities and speed is obtained by the ratio of these two quantities**, speed cannot be negative.

### Can speed be negative in physics?

As neither time nor distance covered by a body can be negative, therefore, speed also **cannot be negative**.

### Can velocity and speed be the same?

**In everyday language, most people use the terms speed and velocity interchangeably**. In physics, however, they do not have the same meaning, and they are distinct concepts. One major difference is that speed has no direction. Thus, speed is a scalar.

### Is velocity is always positive?

**Velocity is positive if an object is moving to the right** and it is negative if an object is moving to the left. Speed tells how fast an object is moving without saying anything about its direction. Speed is always positive. Speed is the “absolute value” of the velocity.

### Is the speed always positive?

Speed is a scalar quantity and only have magnitude which cannot be negative. **It can either be positive or zero**.

### Which is false about speed of an object?

b. FALSE – **Speed refers to how fast an object is moving**; but velocity refers to the rate at which one’s motion puts an object away from its original position.

### Is speed a vector or scalar?

By definition, speed is the **scalar magnitude of a velocity vector**. A car going down the road has a speed of 50 mph.

### Can the distance be zero?

**Yes.** **The distance can be zero when the object is at rest**. Distance is a measurement of how far apart objects are. It can also be defined as the length of the path between any two points.

### Can a body have distance without displacement?

**Yes**. For example, a car travels from point A to B and then comes back. Suppose AB=5m. In this case, distance travelled is 10m, while the displacement is zero.