Answer:
A(many people think that no energy or matter exists outside the universe)
Explanation:
By conservation of momentum,
Distance lighter fragment slide= 7*6.7=46.9m
Answer:
Etiquette determines which behaviors are polite and impolite among players and team. It is a code of polite conduct according to social norms and efficiency. Etiquette as a societal rule is formed to enhance positive human relation when interacting and can reduce conflicts in the society. A person who is aware of the etiquette in a given situation will be more confident, comfortable and competent thus making even those around him or her at ease.
