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Natasha2012 [34]
2 years ago
13

 Pls someone help me

Mathematics
1 answer:
Firlakuza [10]2 years ago
8 0
Area of triangle = base x height over 2
triangle 1
10 x 12 = 120
120/2 = 60
triangle 2
10 x 12 = 120
120/2 = 60
triangle 3
18 x 12 = 216
216/2 = 108
triangle 4
18 x 12 = 216
216/2 = 108

add
108 + 108 + 60 + 60 = 336 square units
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The reaction force exerted by the floor of the elevator on the man is D.944 N

Step-by-step explanation:

When the elevator is accelerating upwards at 2 m/s² there occurs a fictitious force acting downwards to produce a downward acceleration of 2 m/s².

The formula to apply here is ;

Weight due to gravity=mg where m is mass of the man and g is acceleration due to gravity.

Due to additional downward acceleration the total acceleration downwards will be : 9.8+2 = 11.8 m/s²

The man weighs down on the elevator floor with a force of ;

F=m(a+g) where m is mass of man, a is acceleration

F=80( 9.8+2)

F=80(11.8)= 944 N

The reaction force by the floor of the elevator is thus 944 N

Learn More

Elevator physics :brainly.com/question/13464055

Keywords : elevator, acceleration, moving upwards, reaction force, floor

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3 0
3 years ago
A bottle contains 1.6L of water a second bottle constrains 390 mL of water what is the total number of mL in both bottles
patriot [66]

Answer:

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5 0
3 years ago
What is true about the sum of the two polynomials?
const2013 [10]

Answer:

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f(x) + f'(x) = f(x) -f(x) = (–9xy² + 6x²y – 5x³) + (9xy² - 6x²y + 5x³) = 0

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2 years ago
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Answer:

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Step-by-step explanation:

Given data

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0.5x+y= 8---------------1

7 0
3 years ago
I needed to write this is point slope form which I am having some difficulty understanding. Please tell me if I am correct or in
Lyrx [107]

Answer:

It looks like you wrote the equation in point-slope form perfectly!

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Step-by-step explanation:

5 0
3 years ago
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