goldengirl4078
29.01.2020 •
Physics
What is a chemical combination of substances
a) a compound
b) an atom
c) a mixture
d) an element
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Ответ:
Nora's boat is moving towards Sam at 5 km/hr
Explanation:
The question says that Nora is few meters behind Nancy and is still with respect to her that means the relative velocity between Nora and Nancy is zero
Vrel = 5 - Vnora= 0 ⇒ Vnora = 5km/hr
Pictorially we can represent the given condition as:
Norafew metersNancy Sam
5km/hr 5km/hr →
Hence, Nora's boat is moving towards Sam at 5km/hr.