Change in velocity per time
I think it is equal for your question
All the boats operating at night requires Navigation light.
Navigation light helps prevent collisions between boats and see if visibility is poor. The types of boat are : Rowboats, Tug boats, Vessels, Sailboat etc.
Various boats have different lightning color to show its use and side of the boat.
The answer to that would be that
they require so its mandatory for mechanical waves to travel through a medium
<span>virtual, upright, and magnified</span>
