If a stone with an original velocity of 0 is falling from a ledge and takes 8 seconds to hit the ground, what is the final velocity of the stone? A. 39.2 m/s B. 42.6 m/s C. 78.4 m/s D. 156.8 m/s

Answers

Answer 1

Answer: Getting the final velocity of a free fall, we need to use this formula:
vf = g * t
where
g = 9.8 m/s^2
t = time

From the problem given, the final velocity of the stone is
vf = g * t
vf = 9.8 m/s^2 * 8 s
vf = 78.4 m/s

So the correct answer is letter C. 78.4 m/s

Answer 2

Answer:

your answer is C. 78.4 m/s

i just took the test

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The length of a rectangle is 5 cm more than twice the width the perimeter of the rectangle is 34 cm what are the dimensions
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The volume of a rectangular prism is represented by the function x3 + 9x2 + 6x - 16. The length of the box is x + 2 while the height is x + 8. Find the expression representing the width of the box. (2 points) . Answer: A. x - 4 B. x - 1 C. x + 1 D. x + 4

Answers

easy
V=LWH
V=x³+9x²+6x-16
L=x+2
H=x+8
W=?
so
x³+9x²+6x-16=(x+2)(?)(x+8)
x³+9x²+6x-16=(x+2)(x+8)(?)
x³+9x²+6x-16=(x²+10x+16)(?)
divide both sides by (x²+10x+16) or guess what ? is
(x-1)=?

width=x-1

B is answer

or you could have trial and erroed it, since you know they multiply to get the volume

Your answer is either B or x - 4.

What times what equal negative 60 and differs by negative 11

Answers

You can use the " x-method" to solve this question. You need to find the two factors that multiply to -60 and add/ subtract to -11. Your two factors should be 4 and -15. I hope the picture helps

Tatum weighs 47.39 kilograms.What is is her mass rounded to the nearest whole number?A.50 Kilograms
B.48 Kilograms
C.47.4 Kilograms
D.47 Kilograms

Answers

47.39 rounded since 3 is lower than five the numbers before stay the same and you end with 47.0

Bret threw a baseball up in the air. The following table represents the height f(t), in meters, of the ball above the ground at time t seconds: Time (t)
(in seconds) Height f(t)
(in meters)
0 3
2 4
4 3
6 0

Which of the following is represented by the y-intercept of f(t)?
(A)The ball touches the ground after 6 seconds.
(B)The ball was thrown from a height of 3 meters.
(C)The ball reaches a maximum height of 4 meters.
(D)The ball reaches the maximum height in 2 seconds.

Answers

The answer is B. The y-intercept is the number on the y axis when x=0. you can see that when x=0, y=3, therefore B is the answer

The statement that represents the y-intercept of f(t) is (B)The ball was thrown from a height of 3 meters.

How to determine the y-intercept?

The table of values is given as:

t f(t)

0 3

2 4

4 3

6 0

The y-intercept is when x = 0.

From the table, we have:

f(0) = 3

This means that: The ball was thrown from a height of 3 meters.

Read more about y-intercept at:

brainly.com/question/1884491

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Samy recorded the number of different types of pets his friends have in the table shown below:Cats 3
Dogs 5
Rabbits 1
Guinea Pigs 3

Which of the following plots represents the data in the table?
A) A line with 4 tick marks labeled Cat, Dog, Rabbit, and Guinea Pig. Cat has 3 crosses, Dog has 5 crosses, Rabbit has 1 cross, and Guinea Pig has 3 crosses. The line is labeled Number of Pets, and title of graph is Pet Owners.
B) A line with 4 tick marks labeled Cat, Dog, Rabbit, and Guinea Pig. Cat has 3 crosses, Dog has 5 crosses, Rabbit has 5 crosses, and Guinea Pig has 3 crosses. The line is labeled Number of Pets, and title of graph is Pet Owners.
C) A line with 4 tick marks labeled Cat, Dog, Rabbit, and Guinea Pig. Cat has 3 crosses, Dog has 1 cross, Rabbit has 1 cross, and Guinea Pig has 3 crosses. The line is labeled Number of Pets, and title of graph is Pet Owners.
D) A line with 4 tick marks labeled Cat, Dog, Rabbit, and Guinea Pig. Cat has 2 crosses, Dog has 4 crosses, Rabbit has 0 cross, and Guinea Pig has 2 crosses. The line is labeled Number of Pets, and title of graph is Pet Owners.

Answers

Option “A” is correct, because the number of crosses against the pets is equal to its actual quantity given in the question.

Cats = 3 = xxx

Dogs = 5 = xxxxx

Rabbit = 1 = x

Guinea Pigs = 3 = xxx

Answer:

Step-by-step explanation:

Determine the values of x at which each of the functions defined by the following formulas is continuous: (a) x / (x2+1) (b) (x8−3x2+1) / (x2+2x−2) (c) (1/√x) + [x7 / (x+2)3/2?