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
Oliga [24]
3 years ago
8

A toy is accidentally dropped by a kid from his roof. The final velocity of the toy before it reached the ground was 8m/s. Find

the height of the building. please solve this from which I could understand easily​
Mathematics
1 answer:
jeka943 years ago
4 0

The height of the building is 3.27 m

Since the question described free-fall under gravity, we will be using the equation for fall under gravity.

Using v² = u² - 2gh where u = initial velocity of toy = 0 m/s (since it is falls from rest), v = final velocity of toy as it hits the ground = 8 m/s, g = acceleration due to gravity = 9.8 m/s² and h = distance the ball falls = height of building

So, making h subject of the formula, we have

h = -(v² - u²)/2g

Substituting the values of the variables into the equation, we have

h = -(v² - u²)/2g

h = -[(8 m/s)² - (0 m/s)²)/(2 × 9.8 m/s²)  

h = -(64 m²/s² - 0 m²/s²)/(2 × 9.8 m/s²)

h = -64 m²/s²/19.6 m/s²

h = -3.265 m

h ≅ -3.27 m

The value is negative since we take the top of the building as 0 m and downward direction as negative.

So, the height of the building is 3.27 m

Learn more about free fall here:

brainly.com/question/23180622

You might be interested in
What is the difference between 0.05 and 0.5
enot [183]

Answer:

0.05 is 5/100, while 0.5 is 50/100 (or 5/10 or 1/2)

Hope this helps! :)

7 0
3 years ago
These are pretty easy but can someone answer them for me so that i could go to sleep
weqwewe [10]

      Hey There!! (❁´◡`❁)

  1. The answer to this is: Map Key. Because, Large scale maps are typically used to show site plans, local areas, neighborhoods, towns etc. ... A 'small' scale map is one in which a given part of the Earth is represented by a small area on the map. Small scale maps generally show less detail than large scale maps, but cover large parts of the Earth.    
  2. The answer to this is: North. Like the wind rose, the compass rose was coincidentally designed in a fashion that resembled the rose flower. It helped to orient a map in the proper reading direction and gave the relative directions for certain points on the chart. Before compass roses were used on maps, lines were drawn from central points.
  3. The answer to this is: Map. Because, a Map help you to find places where you need to go.
  4. The answer to this is: Map Key. Because, A map usually has a legend, or key, that gives the scale of the map and explains what the various symbols represent. Some maps show relief, or changes inUsedLess elevation. A common way to show relief is contour lines, also called topographic lines.
  5. The answer to this is: Blue. Because Blue Water is mostly associated with the color blue. Uncolored versions of these symbols can be found in Earth, Air, Fire and Water Symbols.
  6. The answer to this is: Help you find directions: Because, A compass rose, sometimes called a windrose or rose of the winds, is a figure on a compass, map, nautical chart, or monument used to display the orientation of the cardinal directions (north, east, south, and west) and their intermediate points.
  7. The answer to this is: A system of vertical and horizontal lines. A grid system on a map is usually square and is represented by drawn lines on the map creating those squares. The purpose of the grid system is to give each point in the map an identifier, an address, by which we can refer to it by.
  8. The answer to this is: Map key Title, date, author, and sources usually appear on the map though not always together. The map's title tells what the map is about, revealing the map's purpose and content. For example, a map might be titled “Political Map of the World” or “Battle of Gettysburg, 1863.”

        Hope It Helped!~

        Sorry, this take me too long to type...

<em>         Good Luck With Your Assignment!~ </em>

<em>         And, Tell me if some the answer are wrong... </em>

<h3>         UsedLess~</h3><h3><em>        (●ˇ∀ˇ●)</em></h3>

4 0
3 years ago
In the diagram below, BD AE, BF bisects ZABD, mC = 88° and
kotykmax [81]

Answer:

40

Step-by-step explanation:

180 - 116 = 64

180 - 64 \times 2 = 52

180 - 52 - 88 = 40

5 0
2 years ago
Classify the following triangle.
PtichkaEL [24]

Answer:

Isosceles obtuse Triangle

7 0
3 years ago
Read 2 more answers
I need the mean, medium, and the mode for these numbers [4,10,11,15,16,16,18,19]​
iren [92.7K]

Hello here would be your answers:

mean: 13.6  

mediun: 15.5  

mode: 16

remember it like this

Mean is the average

Mode is the most often number

Range is when you subtract the smallest number from the largest number

Medium is the middle number when you line it up from the greatest to the least.

hope this helps!

7 0
3 years ago
Other questions:
  • Find the value of k if it is known that the graph of y=kx goes through:
    7·1 answer
  • A student concluded that the solution to the equation √2x+1+3=0 is x=4.
    11·2 answers
  • debby collected eight times as many bags of cans as her friend. if her friend collected 1 2/3 pf bags. how many did debby collec
    14·1 answer
  • Sin (x+pi/4) = root2 cos x for 0
    7·1 answer
  • What is m C in pentagon ABCDE?<br>​
    12·1 answer
  • Please help will mark brainiest!! Asap
    6·2 answers
  • Now , translate this paragraph into modern English using metaphors and meanings that are common today .
    14·1 answer
  • What is the angle of elevation for 9 foot ladder leaning against a wall if the ladder is placed 2 feet away from the base of the
    15·1 answer
  • Given the following information: calculate the perimeter of triangle rst. assume rzx is similar to rst. rz=21, ry= 24, rx= 39, z
    8·1 answer
  • HELP FAST PLEASE!!! Find the sample space of the situation using a table or tree diagram on
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!