1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Julli [10]
3 years ago
6

What is the velocity of an object that has fallen 76 feet

Mathematics
1 answer:
krok68 [10]3 years ago
7 0
Ignoring air resistance...

vf^2-vi^2=2gs, where vf is final velocity, vi=initial velocity, g=acceleration due to gravity, and s is the displacement of the object...

For an object being dropped, vi=0, so we have only have final velocity.

v^2=2gs

v=-√(2gs), g≈-32ft/s^2, s=-76

v=-√(2(-32)(-76))

v=-√4864

v≈ -69.74 ft/s  (to nearest hundredth of a foot per second)

It's negative because the object is falling, or height is decreasing :P
You might be interested in
Quadratic Functions: Vertex Form
Keith_Richards [23]

Answer:

(5, -9).

Step-by-step explanation:

The vertex  if (h, k).

So for 6(x - 5)^2 - 9 the vertex is the point (5, -9).

7 0
3 years ago
Jesse needs to wrap the present shown below. How much wrapping paper would he need?
maxonik [38]
6in would be the answer
4 0
2 years ago
A kite, flying 50 feet high in the air is attached by a string to a stake in the sand. How long is the string to the nearest ten
Vlad [161]
Height of the kite from the ground = 50 feet
Angle at which the kite is flying = 45 degrees
Let us assume the length of the string = x feet
Then
x = 50 * (square root 2)
   = 50 * 1.414
   = 70.7 feet
From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the second option or option "b". 
6 0
3 years ago
3x + 5 = 2x + 8 =<br> help me plz
Luden [163]

Answer:

x=3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the 9th term of the geometric sequence 4, −20, 100, …?
sveta [45]
First, we are going to find the common ratio of our geometric sequence using the formula: r= \frac{a_{n}}{a_{n-1}}. For our sequence, we can infer that a_{n}=-20 and a_{n-1}=4. So lets replace those values in our formula:
r= \frac{-20}{4}
r=-5

Now that we have the common ratio, lets find the  explicit formula of our sequence. To do that we are going to use the formula: a_{n}=a_{1}*r^{n-1}. We know that a_{1}=4; we also know for our previous calculation that r=-5. So lets replace those values in our formula:
a_{n}=4*(-5)^{n-1}

Finally, to find the 9th therm in our sequence, we just need to replace n with 9 in our explicit formula:
a_{9}=4*(-5)^{9-1}
a_{9}=4*(-5)^{8}
a_{9}=1562500

We can conclude that the 9th term in our geometric sequence is <span>1,562,500</span>
4 0
2 years ago
Other questions:
  • Point R(x, 4) and point T (5, 13) are points that lie on a line that had a slope of 3/2. What is the value of x?
    14·1 answer
  • How could you solve this equation <br><br> -4= -17+x
    7·2 answers
  • 00:00
    15·1 answer
  • 7. Subtract the polynomials:<br> 5x2 + 4x + 1 and x2 + 3x - 4
    11·2 answers
  • If f(1)=1 and f(n)=(n-2)^2 +n then find the value of f(3)
    6·1 answer
  • Is the equation true, false, or open? Explain. -9a + 3 = -9a + 3* 5
    9·1 answer
  • What is the probability of choosing a king from a deck of cards? Type your answer as a fraction.
    15·2 answers
  • Violet read 12 books in 2 months. What was her rate of reading, in books per month? Give your answer as a whole number or a FRAC
    11·2 answers
  • What can you multiply by to find:<br><br> 50% of a number?<br> 10% of a number?<br> 75% of a number?
    15·1 answer
  • Evaluate the expression 2x^3 - 14 when x=2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!