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
ICE Princess25 [194]
3 years ago
7

In the video, I drop a ball off a three-story balcony. We know that objects in freefall follow the equation for height h, in

Mathematics
1 answer:
Reil [10]3 years ago
4 0

Answer:

The initial height from which the ball was dropped = 7.90 meters

Step-by-step explanation:

The correct question is:

In the video, I drop a ball off a three-story balcony. We know that objects in free fall follow the equation for height h, in meters, h = -4.9t^2 + c, where t is time in seconds, and c is the initial height. A student timed the drop at 1.27 seconds.

Use this to determine the height from which the ball was dropped, to at least 2 decimal places.

Solution:

The height h of the free falling ball is represented by the equation as:

h=-4.9t^2+c where t is time in seconds, and c is the initial height.

To determine the initial height from which the ball was dropped.

The drop was timed at 1.27 seconds, we will plugin t=1.27 in the given height function to find h(1.27)

h(1.27)=-4.9(1.27)^2+c

h(1.27)=-7.90+c

Since, the drop is timed at 1.27 seconds, so in the given time the ball will reach the ground, making h(1.27)=0

So, we have.

0=-7.90+c

Adding both sides by 7.90 to solve for c.

0+7.90=-7.90+7.90+c

7.90=c

∴ c=7.90\ m

Thus, the initial height from which the ball was dropped = 7.90 meters

You might be interested in
ASAPPP Help please!!! Attachment below!
STALIN [3.7K]

Answer:

26

Step-by-step explanation:

i used a caculator

8 0
3 years ago
Fractions are hard... Or I'm just to lazy to try and do them.
notka56 [123]
Answer: C) 3/2

Explanation: In math, the reciprocal is the inverse of a number or value. Simply, the number when flipped. Knowing this, one can flip the fraction to find the reciprocal, in this case turning 2/3 into 3/2.

Hope this helps :)
5 0
3 years ago
46.27 in + 1 in =. what is the answer?????????????????​
choli [55]

Answer:

=46.27in

Step-by-step explanation:

4 0
3 years ago
11 m
liubo4ka [24]

first off let's notice that the height is 11 meters and the volume of the cone is 103.62 cubic centimeters, so let's first convert the height to the corresponding unit for the volume, well 1 meters is 100 cm, so 11 m is 1100 cm.

\textit{volume of a cone}\\\\ V=\cfrac{\pi r^2 h}{3}~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ V=\stackrel{cm^3}{103.62}\\ h=\stackrel{cm}{1100} \end{cases}\implies 103.62=\cfrac{\pi r^2 (1100)}{3} \\\\\\ 3(103.62)=1100\pi r^2\implies \cfrac{3(103.62)}{1100\pi }=r^2 \\\\\\ \sqrt{\cfrac{3(103.62)}{1100\pi }}=r\implies \stackrel{cm}{0.00510199305952} \approx r

6 0
2 years ago
45 points!
krek1111 [17]

there would be a 99% chance of a red marble being pulled out or even a 1% chance.

because of their being five green marbles and six red there is always a chance you could pull out any one of the colors.

but i believe that both of the answers are 1/2

but im not 100% sure

8 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASEE HELPP TIMED<br> Name one pair of nonadjacent complementary angles in the diagram.
    5·2 answers
  • Factor the polynomial
    10·1 answer
  • Isi drilled a hole that is 5/9 inch wide.she has a screw that is 5/6 inch wide.is the hole wide enough to fit the screw
    6·1 answer
  • Find the total area of the figure
    6·1 answer
  • HELP PLEASSEEEE I NEED TO FIND THE MISSING SIDE HYPOTENUSE
    15·1 answer
  • What justify the conclusion that &lt; 4 is congruent to &lt;6
    7·1 answer
  • Andrew and Kate have $30 to spend on dinner, tax, and gratuity at Mo’s Restaurant. Tax is 6%, and they will give a 15% tip on th
    8·2 answers
  • Use the graph of the polynomial function to find the factored form of the
    10·1 answer
  • PLEASE HELP ME please
    9·1 answer
  • So sorry if im wasting your time its just that i need help plsssssss im gonna fail so badly so help?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!