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1 year ago

A:36 B:39 C:54 D:108

Mathematics

1 answer:

nordsb [41]1 year ago

3 0

The answer is 36 my friend too the test and I helped him

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when a stone falls freely, the time taken to hit the ground varies as the square root of the distance fallen. If it takes four s

Eva8 [605]

Answer:

The stone would take approximately 10.107 seconds to fall 500 meters.

Step-by-step explanation:

According to the statement of the problem, the following relationship of direct proportionality is built:

$t \propto y^{1/2}$

$t = k\cdot t^{1/2}$

Where:

$t$ - Time spent by the stone, measured in seconds.

$y$ - Height change experimented by the stone, measured in meters.

$k$ - Proportionality constant, measured in $\frac{s}{m^{1/2}}$ .

First, the proportionality constant is determined by clearing the respective variable and replacing all known variables:

$k = \frac{t}{y^{1/2}}$

If $t = 4\,s$ and $y=78.4\,m$ , then:

$k = \frac{4\,s}{(78.4\,m)^{1/2}}$

$k \approx 0.452\,\frac{s}{m^{1/2}}$

Then, the expression is $t = 0.452\cdot y^{1/2}$ . Finally, if $y = 500\,m$ , then the time is:

$t = 0.452\cdot (500\,m)^{1/2}$

$t \approx 10.107\,s$

The stone would take approximately 10.107 seconds to fall 500 meters.

4 0

2 years ago

Someone please help me I don’t understand this

Alla [95]

Answer:

huh

Step-by-step explanation:

8 0

2 years ago

Tiffany ate 1/4 of a pizza. If there were 16 slices of pizza to begin with, how many slices did Tiffany eat?

viktelen [127]

Answer:

Tiffany ate 4 slices of pizza

Step-by-step explanation:

1/4 of 16 is 4

6 0

2 years ago

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How do you factor 2x^2+x-3

xxMikexx [17]

Find the factors of -3:
1,-3 and 3,-1

which ever adds up to 1 multiplied by 2

the answer is (2x+3)(x-1)

hope this helps

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2 years ago

????????????????????????

Nesterboy [21]

One is 17.22 and the other is simply 2.

3 0

3 years ago

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