The overall change in velocity is just 20m/s.
No I do not agree. It is because work is done when force acting o a body displace or covers certain displacement in the direction of force applied .
The correct answer for the question that is being presented above is this one: "biosphere, atmosphere." The earth's four main spheres continuously interact to support life and balance Earth's materials. When plants absorb carbon dioxide for photosynthesis, <span>it is an example of biosphere and atmosphere sphere interaction.</span>