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
Eduardwww [97]
3 years ago
11

Ryan throws a baseball upward with an initial velocity of 12 m/s from a height of 2m above the ground. How long will it take for

the baseball to hit the ground? Round answer to the nearest 10th of a second.

Mathematics
1 answer:
Sonja [21]3 years ago
7 0

Answer:

It will take 2.6 s for the ball to hit the ground.

Step-by-step explanation:

This is a standard physics problem

The equation that defines the movement of Ryans baseball is given by the initial velocity, and the acceleration

Distance =  Do + Vo*t + 0.5*a*t^2

Where

Do is the initial distance.

(Do = 2m over the ground)

Vo is the initial velocity = 12m/s

a is the acceleration that is exerted on the body (in this case a = g = -9.8 m/s^2 )

t is the time

We substitute in the equation, and solve for t (time)

(0)=  2+ (12)*t + 0.5*(-9.8)*t^2

We get that

t = 2.606 s  = 2.6 s

You might be interested in
Lori and Craig work in an apple orchard. One week, Craig picks 459 apples, and Lori picks four times as many apples as Craig. If
andreev551 [17]

Answer:

  765

Step-by-step explanation:

Craig picks 4 times 459 apples, or 1836 apples. The total number Lori and Craig picked is ...

  total apples = 459 +1836 = 2295

Each of the three equal groups will have 1/3 this number of apples, so will have ...

  1/3 × 2295 = 765 . . . apples

There are 765 apples in each group.

3 0
3 years ago
Question 12<br>mº<br>680<br>80° 60 750<br>Find the value of mº in the diagram below​
natali 33 [55]

Answer:

is there any diagram for it . if its there it will be more better

4 0
3 years ago
In a nationwide polls of 1,500 randomly selected U.S. residents, 77% said that they liked pizza. In a poll of 1,500 randomly sel
Crazy boy [7]

Answer:One can do a two-proportion test and find that the z-value for different is 1.28 (or -1.28, depending how one sets up the test).

The p-value for that is 0.20, so by most tests this is not statistically significant.

 

Said another way, if there had been no change in the interval, the probability of having a repeat sample at least this different would be 0.20.

The parameter one is attempting to determine is the true proportion of adults in the US who say they like pizza.

For those who think it is 50%, it is essentially 100% likely that it is not 50% but much higher, around 75-77%.

8 0
4 years ago
Read 2 more answers
A researcher at a school of nursing decides to investigate the correlation between a pre- admission HESI examination, high schoo
Nataly_w [17]

Answer: D. Predictive validity

Step-by-step explanation: Predictive validity can be explained as a method of determining the degree or level of correctness of a prediction using pre-existing information or data and values obtained from the actual measurement.

In the scenario above, the researchers investigates the correlation or relationship between the predicted value obtained using a pre- admission HESI examination, high school GPA, and SAT scores and the actual grade received upon completion of the first year. This process is to analyze or determine the validity of our prediction.

4 0
3 years ago
The corners of a square are cut off two centimeters from each corner to form an octagon. If the octagon is 10 centimeters wide,
zvonat [6]

Answer:

  • <u>92 cm²</u>

Explanation:

The area of the <em>octagon</em> may be calculated as the difference of the area of the original square and the area of the four corners cut off.

1) <u>Area of the square</u>.

The original square's side length is the same wide of the formed octagon: 10 cm.

So, the area of such square is: (10 cm)² = 100 cm².

2) <u>Area of the four corners cut off</u>.

Since, the corners were cut off two centimeters from each corner, the form of each piece is an isosceles right triangle with legs of 2 cm.

The area of each right triangle is half the product of the legs (because one leg is the base and the other leg is the height of the triangle).

Then, area of one right triangle: (1/2) × 2cm × 2cm = 2 cm².

Since, they are four pieces, the total cut off area is: 4 × 2 cm² = 8 cm².

3) <u>Area of the octagon</u>:

  • Area of the square - area of the cut off triangles = 100 cm² - 8cm² = 92 cm².

And that is the answer: 92 cm².

4 0
3 years ago
Other questions:
  • Select all of the variables that are solutions of x^2 +20=12x
    13·1 answer
  • What is the standard form of the equation of the line through (6,-3) with a slope of 2/3
    10·2 answers
  • F(x)=x^2. What is g(x)
    9·2 answers
  • What is the value of the digit 3 in 20320​
    13·1 answer
  • In right triangle ABC, ∠C is a right angle and sin A = sin B. Solve for m∠A.
    8·2 answers
  • I need help please help
    11·1 answer
  • PLEASE HELP I WILL MARK BRILLIANT WHOEVER CAN ANSWER this question And I will only accept if you explain with a well answer Than
    15·1 answer
  • The area between z=.34 and z=1.93
    15·1 answer
  • 18 men can earn Rs. 360 in 5 days. How much money will 15 men earn in 9 days?
    7·1 answer
  • 6 times the sum of a number q and 9
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!