Can somone help me with this problem I have been stuck on it for a while. The answer is 17.1m but I dont understand how to get it. If you dont know dont answer or I will report you.
Answers
Hi There, Buddy!
To solve this problem, let us divide the entire motion into 2 phases
1.) When the elevator is moving with an acceleration
2.) When the elevator has a deceleration
For the first half -
u = 0 , a = 0.6 , t = t1
v = 0.6(t1) ---------- ( 1 )
s = 1/2 x 0.6 x (t1)^2 = 0.3(t1^2) -------- ( 2 )
For the second half -
u = 0.6(t1) , a = -0.8 , v = 0
0.6 x (t1) = 0.8 (t2) ----> 3(t1) = 4(t2) ---------- ( 3 )
0.36(t1)^2 = 1.6 s2 ---------- ( 4 )
Now, we know that the total time taken is 10 seconds
------- t1 + t2 =10 , 3t1 = 4t2 ---- t1 = 40/7 , t2 = 30/7
Now, substitute values of t1 and t2 in s1 and s2 and add both s1 and s2 to get total distance travelled.
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Related Questions
If you increase the amount of energy in an
ice cube, what would happen to the ice
cube?
A. It would change color.
B. It would become a liquid.
C. It would decrease in volume.
D. It would get harder.
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hope this helps
The Moon is 4,530,000,000 years old. Convert the Moon's age to scientific notation.
Answers
Answer:
4.53×10^9 years old.
Explanation:
Scientific notation is a mathematical term or expression that illustrates a method of representing actual numbers or figures that are often considered too substantial or too insignificant to be written appropriately using normal decimal representation. It can be depicted as "a x 10^n"
Hence, in this case, converting the age of the moon which is 4,530,000,000 years old to scientific notation is equal to 4.53×10^9 years old.
Answer:
4.53×10^9 years old.
What is 645 g to kg?
Answers
Answer:
0.645 kg
Explanation:
because 1 kg = 1000 g
so 1 g = 1/1000 kg = 0.001 kg
645 g = (645 x 0.001) kg = 0.645 kg
How is a vector represented in symbol form?
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A line is represented by one point true or false
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when the wind blows it creates a pressure on any force it blows against. A large pressure window has an area of 3.5m2. If the wind causes a pressure of 2000Pa on the window what force acts on it?
Answers
Answer:
The force acting on the window is 7000N.
Explanation:
Given that the formula for pressure of solid is P = Force/Area. Then, you have to substitute the values into the formula :
[tex]pressure = \frac{force}{area} [/tex]
[tex]let \: pressure = 2000,area = 3.5[/tex]
[tex]2000 = \frac{force}{3.5} [/tex]
[tex]2000 \times 3.5 = force[/tex]
[tex]force = 7000N[/tex]
Given:-
Area of the window = 3.5 m²Pressure generated = 2000 PaTo Find: Force exerted by the air to the window.
We know,
P = F/A
where,
P = Pressure,F = Force &A = Area.Similarly,
F = PA
→ F = (2000 Pa)(3.5 m²)
→ F = (2000 N/m²)(3.5 m²)
→ F = (200 N)(35)
→ F = 7000 N (Ans.)
Two students make a model of a tree House they want to build. the scale 1:42 in the scale model the treehouse door is 3 cm tall how tall should the real treehouse store be
A 36cm
B 126cm
C 14cm
D 45cm
Answers
Answer:
Option B. 126 cm.
Explanation:
From the question given above,
The scale = 1 : 42.
Height of the real door =...?
The scale for the tree house project is
1 : 42. This implies that for every 1 cm on paper, it represents 42 cm on land.
Now, if the height of the door on paper is 3 cm, then the height of the door on land = 3 × 42 = 126 cm on land.
Therefore, the real tree house door is 126 cm tall.
How much force is generated when a 200 kg block is accelerated at a rate of 25 m/s?
Answers
Answer:
F= 5000 N
Explanation:
This problem is related to force on a body, and to tackle it we need to apply newtons first law of motion which states that "a body will continue to be at rest or uniform motion except acted upon by an external force greater than the force keeping the body at rest or uniform motion"
given
mass m= 200kg
acceleration a= 25 m/s
we know that
F= ma
F= 200*25
F= 5000 N
What makes up all type of matter in living and nonliving things in an ecosystem?
Answers
Producers are responsible for making all types of matter in living and non-living things in an ecosystem.
What do you mean by Ecosystem?An ecosystem may be defined as a place or area where members of different species live together and interact with one another for the purpose of food, shelter, and space.
Producers are organisms which always found at the bottom of each trophic level of an ecosystem. These organisms synthesize their own food and energy from carbon dioxide in presence of sunlight.
After synthesizing energy, they transform their energy to higher trophic levels. Apart from this, several biotic and abiotic factors are also responsible for making up the type of matter in living and nonliving things in an ecosystem.
Therefore, producers are responsible for making all types of matter in living and non-living things in an ecosystem.
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Answer:
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Explanation:
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Answer:
isotopes
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Answer:
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Answer:
Example 1, if a vernier caliper output a measurement reading of 2.13 cm, this means that: The main scale contributes the main number(s) and one decimal place to the reading
E.g. 2. 1 cm, whereby 2 is the main number and 0.1 is the one decimal place number
Explanation:
plz mark as brainliest and hope it helps you
According to Newton's first law of motion, which force is expected to cause a body to accelerate?
•unbalanced force
•Balanced force
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•Strong force
Answers
Answer:
Unbalanced force -
Explanation:
Unbalanced force is expected to cause a body to accelerate.
Answer:
Unbalanced force
Explanation:
Unbalanced force is expected to cause acceleration in any body as it's net value is not zero in every direction .
I hope it's helpful
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Answers
Answer:
20m/s
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h e l p a h o m i e o u t t h a n k s
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A
B
C
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Answer:
D, Air Quality Index :)
Hope this helped!
P.S. : Can I get brainliest please?
Write 3,800 seconds in hours, minutes, and seconds
Answers
Explanation:
3,800 seconds in hours is 1.055556
3,800 seconds in minutes is 63.33333
3,000 seconds in seconds is the same.
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In addition to how much force Earth exerts on the object, which features of an object affect its weight?
mass and location of the object shape and location of the object location of the object and how much energy the object has mass of the object and how much energy the object has
Answers
Answer:
I am pretty sure the answer is A
Explanation:
I know its not C
I hope this helps and I'm sorry if it does not.
The features of an object which affect its weight are the mass and location which is denoted as option A.
What is Weight?This is defined as the force acting on the object due to gravity and the formula is W = mg where m is mass and g is acceleration due to gravity.
This is why the weight features of an object is affected by its mass and then location.
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True or False ?
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Answer:
True
Explanation:
Something that bases conclusions on established authority is Question 1 options: A.pseudoscience B. non-science C.science
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Answer:
is the first one right
Explanation:
Answer:
yes
Explanation:
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Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{eon}}}}}[/tex]
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Answer:
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Answer:
what is the period of a pendulum that takes one second to make a complete back-and-forth vibration? Suppose that a pendulum has a period of 1.5 seconds. How long does it take to make a complete back-and-forth vibration? The period of the pendulum would be 1.5 seconds divided by 1 cycle = 1.5 seconds.
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because it is
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5 vector quantities
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Answers
Answer:
4 vector quantities
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There are 4 vector quantities given in the paragraph, therefore the correct answer for the given problem statement is option C
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Answer:
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Explanation:
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A hurricane is just like any other low-pressure system.
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Need help with number 1
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What is the main unit of measurement used in football?
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Explanation:
Answer:
I suppose you are talking about American football, so the answer would be yards.
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The field is measured using yards.
Question 11
1 pts
What is the acceleration of a 24kg mass pushed by a 6N force?
Answers
i.e F=ma
Answer:
4?
Explanation:
