3 years ago

Carl is boarding a plane.

Mathematics

1 answer:

Reil [10]3 years ago

4 0

if this is an actual question could you give the whole thing?

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A stone is dropped from the edge of a roof, and hits the ground with a velocity of -185 feet per second. How high (in feet) is t

34kurt

Answer:

The height of the roof is 534.8 feet.

Step-by-step explanation:

Let h be the height of the roof.

We know the formula

$v^2-u^2=2gh$

Since, the stone is dropped from the edge of the roof hence, the initial velocity should be zero. Thus, u = 0

$v^2-0=2gh\\h=\frac{v^2}{2g}$

Now, we have

v = -185 feet per second

g = 32 feet per square second

On substituting these values, we get

$h=\frac{(-185)^2}{2\times 32}\\\\h=534.8$

The height of the roof is 534.8 feet.

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masya89 [10]

Answer:

Step-by-step explanation:

Check answer:

14+12= 26

26-12=14

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A book has a length of (b+2) inches and a width of b inches.Write a simplified expression for the perimiter of the book.

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P= 2(b+2) + 2(b)- it would be 2 (width) plus 2( length)

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