## When did average velocity becomes zero?

**If a trip starts and ends at the same point**, the total displacement is zero, so the average velocity is zero.

**Can average velocity ever be zero?**

The average speed of a body in motion can never be zero whereas **the average velocity of a body can have zero value**.

**When did final velocity is zero?**

If a car starts from rest, its initial velocity is zero. If a projectile is tossed into the space, its initial velocity will be more than zero. **If a car stops after applying the brake**, the initial velocity will be more than zero, but the final velocity will be zero.

**In which condition velocity becomes zero?**

**When two bodies travel in the same direction at the same speed**, their relative velocity equals zero.

**What does zero average velocity mean?**

**If a trip starts and ends at the same point, the total displacement is zero**, so the average velocity is zero.

**What is an example of average velocity zero?**

(A)A car moving with an average speed returns to its original position. Hence, in this case the average speed is non-zero while the average velocity is 0. **A car at rest** has both average speed and average velocity zero since it covers no distance and no displacement and is stationary.

**When did velocity change?**

Velocity is a vector quantity. It has both magnitude and direction. Hence, it changes **if the speed changes or the direction changes**.

**When did velocity become negative?**

Negative Velocity: An object has negative velocity **if its position is changing in the negative direction as time increases**. If examining a graph of displacement vs. time, the velocity is negative whenever the graph has negative slope.

**What happens when velocity becomes zero?**

Also if the velocity is 0(which is itself a constant) also indicates that **acceleration is zero**.

**Why velocity becomes zero?**

The average velocity of a body becomes zero **when its displacement is zero**.

## Why can a body have 0 average velocity but not 0 average speed?

**Since distance is also a scalar quantity and it wont be negative if we moves in opposite direction**. It always adding irrespective of direction.So total distance travelled of a moving body can not be zero. So total average speed also cannot be zero and it will be nonzero if body is moving..

**How can a body have zero average velocity but not average speed?**

As it can be zero, so average velocity of the body can also be zero. But **the average speed is the ratio of the total covered by the body to the time taken by it**. As it can never be zero, so average speed of the body can also never be zero. Thus, the average velocity of a body can be zero but not its average speed.

**How did the velocity change?**

The change in velocity occurs Due to **change in direction of motion of the particle**.

**What is the velocity said to have changed?**

A change in velocity is called **acceleration**.

**How do you find average velocity?**

Average velocity is calculated by **dividing your displacement (a vector pointing from your initial position to your final position) by the total time**; average speed is calculated by dividing the total distance you traveled by the total time.

**Is average velocity ever negative?**

Average velocity indicates direction and **can be represented as a negative number when the displacement is in the negative direction**. Average speed does not indicate direction and can only be positive or zero.

**Can velocity be zero or negative?**

**It can be positive or zero but can never be negative** because a negative sign shows the direction and speed does not represent direction.

**Does negative speed exist?**

Since distance and time are positive quantities and speed is obtained by the ratio of these two quantities, **speed cannot be negative**.

**Is final velocity always 0 at max height?**

**When the object reaches a maximum height its velocity becomes 0** and starts falling in downward direction along the direction of acceleration due to gravity.

**When the net velocity of the projectile is zero?**

At a projectile's highest point, its velocity is zero. At a projectile's highest point, its acceleration is zero. The rate of change of the \begin{align*}x\end{align*} position is changing with time along the projectile path.

## Is velocity ever zero in projectile motion?

a. Is the velocity ever zero? **The velocity is never zero in the case of a projectile launched at a nonzero non-vertical angle with respect to the horizontal**, or in the case when the projectile is launched horizontally from a certain height.

**Why is velocity zero at extreme?**

When the mass is at the maximum displacement position, velocity is zero **because the mass is changing direction**. At the position of maximum displacement, the restoring force is at its greatest - the acceleration of the mass will be greatest.

**How is velocity 0 at highest point?**

Yes, **due to -ve acceleration along vertical direction** velocity keep on decreasing and at the highest it becomes zero.

**When can velocity be zero but acceleration is not?**

It is possible that the acceleration of a particle is non-zero and velocity is zero at the same instant. For example, **if a ball is thrown up then at the highest point**, velocity is zero but the acceleration is non-zero.