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sertanlavr [38]
2 years ago
6

Read the claim about caffeine. Caffeine improves mental alertness and motor coordination. A university research study was conduc

ted to examine how moderate doses of caffeine affect fine motor skills. Ten teen girls, ages 14 to 18, were given 200 mg of caffeine per day for 30 days. Thirty minutes after taking the caffeine, each subject took a timed fine motor skills test in which they fitted 20 small beads onto pegs. The graph compares each subject’s average results on the same test done 30 minutes before and after taking the caffeine. Which group would most benefit from the claim? people who sell coffee with caffeine people who sell decaffeinated tea diners that serve only drinks without caffeine manufacturers of caffeine-free bottled fruit juice
Physics
1 answer:
GuDViN [60]2 years ago
4 0

Answer:

Scientific explanation is aimed at shedding light into natural phenomenon through the use of measurement results and observations.

The groups to benefit from the claim are:

  • People who sell coffee with caffeine
  • Diners that serve coffee with caffeine
  • Soda manufacturers that sell caffeinated drinks
  • Manufactures of caffeinated energy sports drink

The above selection are correct due to the following reasons:

The claim in the question is: <em>"Caffeine improves mental alertness and motor coordination"</em>

The assertions of the claim are:

  1. Caffeine improves mental alertness, meaning that by taking caffeine, a person becomes more alert and/or aware of the environment as well as being able to keep up better at task, which are desirable for work related activities
  2. Caffeine improves motor coordination; Motor coordination refers to the ability to involve multiple parts of the body to achieve complex motion. The ability to improve motor coordination can create demand for caffeine among active people

Based on the above association of caffeine to benefits that are desired by active people, (working people that generate income), the groups that would benefit most from the claim are, the dealers in caffeinated products including:

  1. <u>People who sell coffee with caffeine</u>
  2. <u>Diners that serve coffee with caffeine</u>
  3. <u>Soda manufacturers that sell caffeinated drinks</u>
  4. <u>Manufactures of caffeinated energy sports drinks</u>

<u />

Learn more about the scientific explanations here:

brainly.com/question/6872942

Please Mark Brainliest If This Helped!

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Answer:

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We use the first equation of motion for a free-falling body to obtain v as follows;

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To obtain t, we use the second equation of motion as stated;

h=ut+gt^2/2.................(2)

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since u = 0 for the vertical motion;  equation (2) can be written as follows;

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substituting;

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The final velocity of the pebble as it hits the ground is 21.5 m/s.

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