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Ierofanga [76]
3 years ago
5

The rule below shows how to find the position of an object thrown upward with initial velocity of 15 feet per second. Which answ

er expresses that rule in the form of an equation?
Square the input and then multiply it by -16. Add this product to the initial velocity multiplied by the input.

A. F(t) = 16t2 + 15t2
B. F(t) = (-16t+ 15t)2
C. F(t) = 16t2 - 15t
D. F(t) = -16t2 + 15t
Mathematics
2 answers:
nekit [7.7K]3 years ago
5 0

Here we're applying a basic physics rule for vertical motion where the only pull on the object is gravity.


This rule has the form


h(t) = h + v t + (1/2)a*t^2

o o


To adapt this rule to this particular question replace h with 0, as the

o

upward path of the object begins at 0 ft. Replace v with +15 ft/sec.

o


Replace "a" with (-32.2 ft/(sec^2); this is the acceleration due to gravity.


Then we have the following, with the label F(t):


F(t) = 0 + (15 ft/sec)t + (1/2)(-32.2 ft)/(sec^2), or


F(t) = 15t - 16.1t^2. Thus, Choice D is correct.


Please note: To avoid confusion, please use " ^ " to denote exponentiation:


F(t) = -16t^2 + 15t

saveliy_v [14]3 years ago
5 0

Answer:

This is correct. Thank you

Step-by-step explanation:


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zimovet [89]

Answer:

D

Step-by-step explanation:

A relation is a set of related points. A function is a set of related points where no inputs repeat.

A. {(1, 2), (2, 3), (3,  2), (2, 1)}

This repeats (2,3) and (2,1). Not a function.

​B. {(4, 2), (3, 3), (2,  4), (3, 2)}  

This repeats (3,3) and (3,2). Not a function.

C. {(1, −1), (−2, 2), (−1,  2), (1, −2)}

This repeats (1,-1) and (1,-2). Not a function.

D. {(1, 4), (2, 3), (3,  2), (4, 1)}

This doe NOT repeat. Function.

6 0
3 years ago
Evaluate <br> -2/5-4/5+(-9/10)
Sphinxa [80]
ANSWER-

- 21/10 or -2.1









4 0
3 years ago
Three concentric circles have radii of lengths 2, 4, and 8 feet. What is the length of the shortest line segment that has at lea
Kisachek [45]
The shortest distance between 2 concentric circles is the difference of their radii. Thus the answer is 8-2=6
5 0
3 years ago
A line segment has the endpoints P(4, 7) and Q(6, 7). Find the coordinates of its midpoint M.
tatuchka [14]

Answer:

(5, 7)

Step-by-step explanation:

M = (x1 + x2/2 , y1 + y2/2)

M = ( 4 + 6 /2 , 7 + 7 / 2)

M = 5, 7

4 0
3 years ago
What is the quotient of 3/4 divided by 1/5?<br> The quotient is <br> 3 and ___________
Zanzabum

Answer:

The quotient is  3 and \frac{3}{4}.

Step-by-step explanation:

To find the quotient of the division (which is just the solution, really), we have to solve the division itself:

\frac{\frac{3}{4}}{\frac{1}{5}}

= \frac{3 \cdot 5}{1 \cdot 4}

= \frac{15}{4}

Now that we know the quotient, we can look at the question itself to find it requires from us an answer with a whole number in it.

Therefore, we transform the fraction as thus:

\frac{15}{4}

= 3 \frac{3}{4}

Therefore, the final answer is 3 and \frac{3}{4}.

Hope this helped!

3 0
3 years ago
Read 2 more answers
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