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Dahasolnce [82]
3 years ago
9

Which of these is a key feature of an experimental study?

Physics
2 answers:
Pavlova-9 [17]3 years ago
7 0
The key feature in the experimental study is C. <span>The treatment in the experiment must be applied to each of the individuals in the experimental group. This is because it is made sure that the variables and conditions in different correspondents are applied so that actual results may be concluded.</span>
juin [17]3 years ago
3 0

the only logical answer is C


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A 47 kg mass is moving across a horizontal surface at 8 m/s. What is the force required to bring the mass to a stop in 4.1 secon
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Answer:

Force = -91.7 Newton

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Given the following data;

Mass = 47 kg

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Since the object comes to a stop, its final velocity would be equal to zero.

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First of all, we would determine the acceleration of the object;

Mathematically, acceleration is given by the equation;

Acceleration (a) = \frac{final \; velocity  -  initial \; velocity}{time}

Substituting into the equation;

a = \frac{0 - 8}{4.1}

a = \frac{-8}{4.1}

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Next, we would determine the force required to bring the object to stop;

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Force = 47 * -1.95

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