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Reika [66]
3 years ago
7

Which question requires the collection of data to answer it?

Physics
1 answer:
iren [92.7K]3 years ago
3 0

Answer:

a

Explanation:

b, c, and d are all opinion based, a is the only one that you need factual evidence and observations.

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it would b B

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a passenger elevator operates at an average of 8 m/s if the 60th floor is 219 m above the first floor how long does it take the
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The universal sign for choking is __________.

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two balled fists pressing the abdomen

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Imagine that you pushed a box, applying a force of 30 Newton’s , over a distance of 5 meters. How much would you do have done ?
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7 0
3 years ago
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Question 2 (10 points)
kenny6666 [7]

The force required to slow the truck was -5020 N

Explanation:

First of all, we find the acceleration of the truck, which is given by

a=\frac{v-u}{t}

where

v is the final velocity

u is the initial velocity

t is the time

For the truck in this problem,

v = 11.5 m/s

u = 21.9 m/s

t = 2.88 s

So the acceleration is

a=\frac{11.5-21.9}{2.88}=-3.6 m/s^2

where the negative sign means that this is a deceleration.

Now we can find the force exerted on the truck, which is given by Newton's second law:

F=ma

where

m = 1390 kg is the mass of the truck

a=-3.6 m/s^2 is the acceleration

And substituting,

F=(1390)(-3.6)=-5004 N

So the closest answer among the option is -5020 N.

Learn more about acceleration and forces:

brainly.com/question/11411375

brainly.com/question/1971321

brainly.com/question/2286502

brainly.com/question/2562700

#LearnwithBrainly

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3 years ago
Mining runoff is _____ water that comes from the mining of rock.
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A CONTAMINATED WATER

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