Answer:16.5 m/s
Explanation:
Given
Velocity of boy
velocity of girl
velocity of ball relative to boy
backward
Now We have to find velocity of ball relative to girl
Representing it in vector form



and



therefore velocity of ball relative to girl

Answer:
True
Explanation:
Hierarchy is a principle of visual design which logically express the comparatively importance of one element over another by providing visual guide in their organisation. By using Hierarchy one can easily understand the things so it makes layout very clear and easy to understand. Here are objects are settled in in the manner of their importance hence it allows designer to show the viewer which object in more important.
Faster to hit the ground because if so yes?
Answer:
Ос.
The spacing between particles increases.
Heat causes greater particle activity, and the particles
are farther apart.
Masa is a concept that identifies that magnitude of a physical nature that allows indicating the amount of matter in a body. Within the International System , its unit is the kilogram ( kg . )