Why doesn't a moving a object keep moving forever?

Answers

Answer 1

Answer: -- If a moving object speeds up, slows, down, or changes its direction, then that has to be because there's some force on it.

-- If there's no force on an object, then it keeps moving forever, at a constant speed in a straight line.

-- We can never see that happening on Earth, because around here, there's always some force on a moving object ... like gravity, friction, and air resistance. In order for it to actually happen, it pretty much has to be happening in outer space.

Examples:

-- The Earth keeps moving around the sun, and TV satellites keep moving around the Earth, without slowing down.

-- Even the International Space Station, orbiting about 270 miles above the earth's surface, is almost outside all of the atmosphere, but not quite. There's still a tiny bit of air out there, slowing it down and 'decaying' its orbit. About once a month, they have to give it a short burst of rocket fire, to boost it back up to the altitude where it's supposed to be.

Answer 2

Answer: Objects will actually keep moving forever unless there are other other forces to stop them. For example, if you jump right now, Gravity will pull you back to the Earth. The only time an object will keep on moving forever is in a perfect vacuum. I hope this was helpful...

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Please help! What is the value of B in the following proportion? 11/12 = B/156
A. 24
B. 143
C. 134
D. 170

Answers

Answer:

B. 143

Step-by-step explanation:

11 b

----- = -------

12 156

using cross products

11 * 156 = 12 b

divide by 12

11 * 156/12 = b

11 * 13 = b

143 = b

B.143

step by step:
$(11)/(12) = (b)/(156)$
use cross multiplication
$12 * b = 11 * 156$
$12b = 1716$
divide both sides by 12
$(12b = 1716)/(12)$
$b = 143$

I need help please!!!!

Answers

Answer:

-5, -2, 1, 3

Step-by-step explanation:

Tamera has test scores of 88,78,98,88, and 78. She was told that her final test grade average is the highest C possible as a whole number. What was her last test score?

Answers

I am assuming that the highest C grade is 82.

There are 5 known test scores and 1 unknown for a total of 6 tests.

82 * 6 = 492

88 + 78 + 98 + 88 + 78 = 430

492 - 430 = 62

Tamera's last test score is 62. It resulted to an average test grade of 82.

Need help! Express 86% as a fraction in its lowest form. Do the same with 80%,59% and 98%

Answers

percent means parts out of 100
x%=x/100

so

86%=86/100=43/50

80%=80/100=8/10=4/5
59%=59/100
98%=98/100=49/50

86% = 43/50
80% = 4/5
59% = 59/100
98% = 49/50

You pay $10.32 for 8 music downloads. What is the rate of cost per download?

Answers

the answer is 1.29 hope i helped

let x = cost per 1 download (rate of cost per download)
now we set up a proportion:
$(1)/(8) = (x)/(10.32)$
1 download
OVER
8 downloads
EQUALS
x (see top for x)
OVER
$10.32
when we cross multiply, we get
10.32=8x
divide both sides by 8 to get:
1.29=x
so the rate of cost per download is $1.29

Ms. Taylor uses 1/8 teaspoon of salt for each batch of cookies she bakes. How many teaspoons of salt are needed to bake 5 batches?

Answers

1/8 = 0.125
0.125 * 5 = 0.625
Ms. Taylor will need 625/1000 teaspoon of salt for 5 batches.

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