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
Igoryamba
3 years ago
5

The top floor of the Ostankino TV Tower in Moscow is located at a height of 360.4 m. Assume a stone is dropped from this top flo

or. [Note: round your numerical answers to two decimal places; if necessary]
(a) Find the distance of the stone above the ground at any time t (before it hits the ground)

(b) How long does it take the stone to reach the ground?

(c) With what velocity does it reach the ground?
Physics
1 answer:
Ulleksa [173]3 years ago
8 0

Answer:

x=360.4-4.905t^2

8.57181 s

84.0894561 m/s

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

g = Acceleration due to gravity = 9.81 m/s² = a

Let distance from ground be x

From equation of motion we have

s=ut+\frac{1}{2}at^2

Here, distance covered while the stone is falling will be 360.4-x

360.4-x=ut+\frac{1}{2}at^2\\\Rightarrow 360.4-x=\frac{1}{2}9.81t^2\\\Rightarrow 360.4-x=4.905t^2\\\Rightarrow x=360.4-4.905t^2

The equation is x=360.4-4.905t^2

At the ground x = 0

0=360.4-4.905t^2\\\Rightarrow t=\sqrt{\dfrac{-360.4}{-4.905}}\\\Rightarrow t=8.57181\ s

The time taken by the stone to fall to the ground is 8.57181 s

v=u+at\\\Rightarrow v=0+9.81\times 8.57181\\\Rightarrow v=84.0894561\ m/s

The velocity of the stone when it reaches the ground is 84.0894561 m/s

You might be interested in
Who might be experiencing psychosis?
aleksandrvk [35]

Answer:

D

Explanation:

I think the answer is D, because of hallucinations

4 0
3 years ago
What happens to a light ray passing through the center of a lens?
Readme [11.4K]
Theoretically, the light ray will not change direction. The center of a lens is called the optical center. If the ray of light hits the lens even just a little bit off center, the light ray is refracted. Refraction happens when the incident and exit angles of the ray are different. The optical center is guaranteed to not have any difference in angle, which allows the light ray to pass through directly without changing direction.
6 0
3 years ago
Read 2 more answers
The total distance from a house to a school to is 9.5 km. A student travels all the way from his house to the school and back to
marysya [2.9K]

Answer:

0

Explanation:

Displacement is a vector from initial to final point. Because initial and final point are the same, so displacement is 0.

6 0
3 years ago
Two charges q1 and q2 exert a 90 N electrostatic force onto each other when they are 1 m apart. They are moved further away to a
Dovator [93]

Answer:

?????????????????????????

6 0
3 years ago
Read 2 more answers
The person given credit for the first modern atomic theory was __________.
mote1985 [20]
<span>The person given credit for the first modern atomic theory was __________.


Dalton.</span>
7 0
3 years ago
Other questions:
  • A light beam is traveling inside a glass block that has an index of refraction of 1.46. As this light arrives at the surface of
    5·1 answer
  • Can someone help me plz<br>it's a glass bell jar and to vacuum pump
    13·1 answer
  • Two infinite planes of charge lie parallel to each other and to the yz plane. One is at x--1 m and has a surface charge density
    11·1 answer
  • A train travels 98 kilometers in 4 hours, and then 61 kilometers in 3 hours. What is its average speed?
    11·1 answer
  • Which method of testing substances is a sure way to identify a chemical reaction?
    8·2 answers
  • The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allow
    5·2 answers
  • Does light travel faster through water or glass?
    5·1 answer
  • Compare and contrast aerobic physical activity with anaerobic physical activity.
    12·2 answers
  • Which object has the magnetic domains shown in the image?
    13·2 answers
  • 1. Which of the following is true about sound waves?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!