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Julli [10]
2 years ago
8

What is the kinetic energy of a 1500 kg object moving at a velocity of 10 m/s?

Mathematics
1 answer:
DiKsa [7]2 years ago
7 0

Answer: The Kinetic Energy Formula is: KE = mass x velocity^2 / 2

Plug in the correct numbers into the variables

KE = 1500 kg x 10 m/s ^2 / 2

Square the 10 m/s

KE = 1500 kg x 100 m/s / 2

Multiply

KE = 150,000 / 2

Divide

KE = 75,000 Newton-meters or joules

Step-by-step explanation:

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Find the values of x and y. Pls helpI’m helpless at math
Svetradugi [14.3K]

Answer:

  • x = 1
  • y=\frac{\sqrt{3}}{2}  

Step-by-step explanation:

From the given right-angle triangle

The angle = ∠60°

  • The adjacent to the angle ∠60° is 1/2.
  • The opposite to the angle ∠60° is y.

The hypotenuse = x

<u>Determining the value of x:</u>

Using the trigonometric ratio

cos 60° = adjacent / hypotenuse

substituting adjacent = 1/2 and hypotenuse = x

cos\:60^{\circ }=\:\:\frac{\frac{1}{2}}{x}

\cos \left(60^{\circ \:}\right)=\frac{1}{2x}

\frac{1}{2}=\frac{1}{2x}          ∵ cos (60°) = 1/2

2x=2

Dividing both sides by 2

\frac{2x}{2}=\frac{2}{2}

Simplify

x=1

Thus, the value of hypotenuse x is:

x = 1

<u>Determining the value of y:</u>

Using the trigonometric ratio

sin 60° = opposite / hypotenuse

As we have already determined the value of hypotenuse x = 1

substituting opposite = y and hypotenuse = 1

sin 60° = y/1

y = 1 × sin 60°

y=\frac{\sqrt{3}}{2}       ∵  \sin \left(60^{\circ \:}\right)=\frac{\sqrt{3}}{2}

Therefore, the value of y is:

y=\frac{\sqrt{3}}{2}      

Summary:

  • x = 1
  • y=\frac{\sqrt{3}}{2}    
5 0
2 years ago
Given the directrix of y = 6 and focus of (0, 4), which is the equation of the parabola?\
Yuliya22 [10]

Answer:

The directrix is y=6 and focus is (0,4)

The equation of the parabola is,

20-4y=x²

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2 years ago
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uysha [10]

Answer: go to the website

Step-by-step explanation:

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1 year ago
What is the answer to this question?
balandron [24]

Answer:

I believe it is 3

Step-by-step explanation:

7 0
2 years ago
St. Augustine grass can grow at the rate of 4 over 7 centimeter per week.
Lady_Fox [76]

Answer:

3 weeks

Step-by-step explanation:

create a proportion of grass growth rate over time:

(\frac{4}{7}÷1) = (\frac{12}{7}÷x )

\frac{4x}{7} = \frac{12}{7}

cross-multiply:

28x = 84

x = 84/28 which is 3

6 0
3 years ago
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