VERY EASY QUESTION!!!!!! 20 POINTS!!!!!!!!

Physics

2 answers:

liubo4ka [24]3 years ago

8 0

Remark

There fewer people who see it the better if you are still a little uncertain about what to say or how to say it.

Given the remark, I think this is the place to start. Mothers are especially tolerant about listening to a first time speech. The criticism is very light. You will benefit most by hearing what it sounds like. I would pick A as the answer.

You have an awful lot of nerve if you are going to talk in front of an audience that large with an unprepared speech. Good luck.

At a science fair is not a bad choice. The groups are small, and you will get to explain your project many times before you see a judge. That will give you the necessary experience to polish what you have to say.

How do you feel about talking in front of classmates with a teacher giving you a mark? Not the best place to start.

Conclusion. Please Read

Where you start depends on what you are talking about. The science fair option is a good one if that is your intended audience. For all other assignments, I'd pick A. If this is a question that actually came from a physics class then pick C.

slamgirl [31]3 years ago

4 0

C. at a science fair

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dlinn [17]

First, we will get the resultant force:
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Therefore, the resultant force = 710 - 700 = 10 newtons (in the vertically upwards direction)

Now, we will get the mass of the person.
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Then we will calculate the acceleration of the resultant force:
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10 = 71.428*acceleration
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Finally, we will use the equation of motion to get the final speed of the person.
V^2 = U^2 + 2aS where:
V is the final velocity that we need to calculate
U is the initial velocity = 0 m/sec (person starts at rest)
a is the person's acceleration = 0.14 m/sec^2
S is the distance covered = 25 cm = 0.25 meters

Substitute with the givens in the above equation to get the final speed as follows:
V^2 = U^2 + 2aS
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