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borishaifa [10]
3 years ago
14

If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained b

y multiplying t by 32 and adding 10 to the result. Find V as a linear function of t, and use this function to evaluate V(7.8), the velocity of the object at time t = 7.8 seconds.
A. V(7.8) = 257.6 ft per sec

B. V(7.8) = 260.9 ft per sec

C. V(7.8) = 259.6 ft per sec

D. V(7.8) = 258.9 ft per sec

E. None of these
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
5 0

Answer:

259.6 ft/sec

Step-by-step explanation:

it is a universal standard that acceleration due to gravity is 32ft/sec^2.

Now it can be verified by equation,

V(f) = V(i)+at (1st equation of motion derived by Newton's three laws of motion)

where,

V(f) is final velocity

V(i) is initial velocity

a is acceleration which is constant and have value 32ft/sec^2

t is time which is given as 7.8 seconds

In the given case, initial velocity that is V(i) will be 0ft/sec. Because, on dropping, object will start to move under the influence of gravity from zero speed.

So,

V(f) = 0 +(32) (7.8)

V(f) = 249.6 ft/sec

Now the condition is given that you have to add a constant 10 to the answer.

so, V(f) = 249.6 + 10

      V(f) = 259.6 ft/sec

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Use the raw data below to create a table that can be used to create a histogram with 5
schepotkina [342]

Answer:

Five classes

Step-by-step explanation:

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You get

1.1, 1.3, 1.6, 1.7, 2, 2.6, 2.7, 2.9, 3.2, 3.2, 3.5, 3.5, 3.9, 4.6, 4.7, 4.8, 4.8, 4.9, 4.9, 5.3, 5.7, 6.4, 6.5, 7.1, 7.5, 7.6, 8.1, 8.2, 9.2, 9.4

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3. Calculate the class width

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8.3/5 = 1.7

Round this up to 2.

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You could use classes: 1 - 3, 3 - 5, 5 - 7, 7 - 9, 9 -11

However, even numbers are easier to read.

It would be preferable to use classes: 0 - 2, 2 - 4, 4 - 6, 6 - 8, 8 - 10

5. Prepare a frequency distribution table

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4 0
3 years ago
Solve the following equation. Round solution to the tenths place.<br> 29 = с/7.2<br> C =
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Answer:

c = 208.8

Step-by-step explanation:

a. \frac{c}{7.2} =29   <em>To solve for C, you need to get the variable on one side of the equation and the numbers on the other side of the equation.</em>

b.  \frac{c}{7.2} =29   <em>You need to move the 7.2 to the other side. So, </em><em>multiply</em><em> both sides by 7.2, because it's being divided, so multiplying will cancel it out.</em>

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d.  c. = 208.8   <em>The answer is 208.8, which is rounded to the tenths place.</em>

Hope this helps! I tried to explain it in detail. :)

7 0
3 years ago
X + 6 = -10<br> ttyyyyyyy
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Answer:

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6 0
2 years ago
I don’t know how to do this problem
Cloud [144]

Conner's work is correct.

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6 0
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