A bus starting from Bengaluru covers a distance of $300 \mathrm{km}$ in $6$ hours on Friday evening, and returns to Bengaluru in $4$ hours early next morning. Find its average speed.

Tick $\left(✓\right)$ the objects that are in motion and cross$\left(\times \right)$ the objects that are stationary. 

Tick $\left(✓\right)$ the objects that are in motion and cross$\left(\times \right)$ the objects that are stationary. 

Tick $\left(✓\right)$ the objects that are in motion and cross$\left(\times \right)$ the objects that are stationary. 

State if the object in picture is in motion or stationary. 

State if the object in picture is in motion or stationary. 

State if the object in picture is in motion or stationary. 

Choose the correct option. 

Motion of a rolling ball is an example of