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NikAS [45]
3 years ago
13

Conclusion: Medicine A is an effective treatment for the common cold. A study was conducted to test the effectiveness of Medicin

e A. Which question would help in determining whether the conclusion above is valid? A. How many people in the study had the flu? B. How many people were included in the study? C. What was the average age of the people in the study? D. What was the most common occupation of people in the study?
Physics
1 answer:
Lerok [7]3 years ago
7 0
B. How many people were included in the study.
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Explanation:

Given that,

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We need to find the change in momentum of the tennis ball. It is equal to the final momentum minus initial momentum

\Delta p=m(v-u)\\\\=0.06\times (26-20)\\\\=0.36\ kg-m/s

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