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BlackZzzverrR [31]
3 years ago
6

Are they right??? Due tomorrow

Mathematics
1 answer:
DedPeter [7]3 years ago
8 0
Yes they are right you did a great job!
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Ymorist [56]

Answer:

6×+÷3=2+4×=6

3x 8x+6 =8×+y1×-2

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3 years ago
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50 POINTS
Marina86 [1]

vi is going in the positive direction (up). (That's my choice). a (acceleration) is going in the minus direction (down). The directions could be reversed.

Givens

vi = 160 ft/s

vf = 0 (the rocket stops at the maximum height.)

a = - 9.81 m/s

t = ????

Remark

YOu have 4 parameters between the givens and what you want to solve. Only 1 equation will relate those 4. Always always list your givens with these problems so you can pick the right equation.

Equation

a = (vf - vi)/t

Solve

- 32 = (0 - 160)/t Multiply both sides by t

-32 * t = - 160 Divide by -32

t = - 160/-32

t = 5

You will also need to solve for the height to answer part B

t = 5

vi = 160 m/s

a = - 32

d = ???

d = vi*t + 1/2 a t^2

d = 160*5 + 1/2 * - 32 * 5^2

d = 800 - 400

d = 400 feet

Part B

You are at the maximum height. vi is 0 this time because you are starting to descend.

vi = 0

a = 32 m/s^2

d = 400 feet

t = ??

formula

d = vi*t + 1/2 a t^2

400 = 0 + 1/2 * 32 * t^2

400 = 16 * t^2

400/16 = t^2

t^2 = 25

t = 5 sec

The free fall takes the same amount of time to come down as it did to go up. Sort of an amazing result.

6 0
3 years ago
I need someone who will answer all five questions correctly. Give out 100 bonus points for who will answer all 5 correctly
KATRIN_1 [288]

Answer:

The circumference of the yellow circle is 9\pi or 28.27cm^2 approximately, the circumference of the blue circle is 6\pi or 18.85m^2 approximately, the circumference of the green circle is 80\pi or 251.33mm^2 approximately, the circumference of the red circle is 5\pi or 15.71cm^2 approximately, and the circumference of the pink circle is 7\pi or 21.99cm^2 approximately.

Step-by-step explanation:

To find the circumference of a circle, you need to multiply the diameter of the circle and multiply it by \pi. In this case, the circumferences of the yellow circle are 9\pi or approximately 28.27cm^2, the circumference of the blue circle is 6\pi or approximately 18.85m^2, the circumference of the green circle is 80\pi or approximately 251.33mm^2, the circumference of the red circle is 5\pi or approximately 15.71cm^2, and the circumference of the pink circle is 7\pi or approximately 21.99cm^2.

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Answer:

nb bhvghvghvhjhkj

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bjnbhv hgv

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