Question

a particle returns to its starting point after one hour what is its displacement and average velocity?

Answer 1

hey friend,

the displacement and average velocity will be zero as the initial and final position is same.

hope it will help u

Answer 2

Answer:

The average velocity and displacement are 0.

Explanation:

The particle returning to the starting point will not possess velocity as well as displacement due to –

Given is the displacement and average velocity to be calculated when a particle returns to its original position.  

The displacement is a vector quantity so it has magnitude as well as the direction. When a particle starts from a starting point may travel up to a certain distance with a positive displacement but when it return to the starting point, covers the same path with negative displacement, thereby,  

Total displacement = positive displacement + negative displacement = 0.

Similarly, velocity is also a vector quantity which is a measure of displacement over time

$\bold{\begin{aligned} \text { Velocity } &=\frac{\text {Displacement}}{\text {Time}}} \\ \text {Average velocity} &=\frac{\text {Total displacement}}{\text {Total Time}} \end{aligned}$

$\begin{array}{c}{\text { Average velocity }=\frac{0}{1} h r} \\ {\text { Average velocity }=0}\end{array}$