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
STALIN [3.7K]
3 years ago
6

Neglecting air​ resistance, the distance s left parenthesis t right parenthesis in feet traveled by a freely falling object is g

iven by the function s left parenthesis t right parenthesisequals16 t squared​, where t is time in seconds. The height of a certain tower is 862 feet. How long would it take an object to fall to the ground from the top of the​ building?
Physics
1 answer:
ivann1987 [24]3 years ago
7 0

Explanation:

It is given that, the height of a certain tower is 862 feet i.e to reach on the ground the object should travel, s = 862 feet

The distance traveled by a freely falling object is given by :

s(t)=16t^2

16t^2=862

t=\sqrt{53.875}

t = 7.34 seconds

So, the object will take 7.34 seconds to fall to the ground from the top of the​ building. Hence, this is the required solution.

You might be interested in
A Car with drives into a solid object with 70 km/h, from which height would it fall if it was in free fall?​
Ilya [14]

Answer:

18.9 m.

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 0 m/s

Final velocity (v) = 70 km/h

Height (h) =?

Next, we shall convert 70 km/h to m/s. This can be obtained as follow:

3.6 km/h = 1 m/s

Therefore,

70 km/h = 70 km/h × 1 m/s / 3.6 km/h

70 km/h = 19.44 m/s

Finally, we shall determine the height. This can be obtained as follow:

Initial velocity (u) = 0 m/s

Final velocity (v) = 19.44 m/s

Acceleration due to gravity (g) = 10 m/s²

Height (h) =?

v² = u² + 2gh

19.44² = 0² + (2 × 10 × h)

377.9136 = 0 + 20h

377.9136 = 20h

Divide both side by 20

h = 377.9136 / 20

h = 18.9 m

Thus, the car will fall from a height of 18.9 m

8 0
3 years ago
A major difference between radio waves, visible light, and gamma rays is the ____ of the photons, which results in the different
olga2289 [7]
The sentence can be completed as follows:
"<span>A major difference between radio waves, visible light, and gamma rays is the energy of the photons, which results in the different photon frequencies and wavelengths."

In fact, gamma rays have greater energy than visible light and visible light has greater energy than radio waves. The energy E of a photon is related to its frequency, f, by
</span>E=hf
<span>where h is the Planck constant. We see from this formula that the higher the frequency, the greater the energy. Instead, the wavelength is inversely proportional to the frequency:
</span>\lambda= \frac{c}{f}
<span>where c is the speed of light. Since the frequency is directly proportional to the energy, this means that the wavelength is inversely proportional to the energy.</span>
8 0
3 years ago
Read 2 more answers
Which is more useful for storing thermal energy, the block of lead or the water in the calorimeter?
leonid [27]

I believe it is the block of lead

5 0
3 years ago
PLEASE HELP!!!! :D When you look at the Sun through a filtered telescope, the visible portion of the Sun appears blotchy.
olya-2409 [2.1K]
<span>When an individual looks through a filtered telescope in which he or she observes the sun, the portion where it appears blotchy is likely to be called the sunspots while the layer of the sun where it shows where it occurs is called the photosphere.</span>
5 0
3 years ago
Read 2 more answers
Who discovered Absolute Temperature​
zepelin [54]

Answer: William Thomson, better known as Lord Kelvin

5 0
3 years ago
Read 2 more answers
Other questions:
  • Listed following are three possible models for the long-term expansion (and possible contraction) of the universe in the absence
    13·1 answer
  • The bob (weight) at the end of a pendulum has a mass of 0.3 kilograms. The bob is pulled to position B and allowed to swing. It
    15·1 answer
  • A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 420 gram setting. It
    6·1 answer
  • A cat is on a 1.5 m high table and jumps at a 37 angle with a speed of 10 m/s. how far horizontally from the edge of the table d
    11·1 answer
  • A real object with height of 3.20 cm is placed to the left of a converging lens whose focal length is 90cm. The image is on the
    13·1 answer
  • A parallel-plate capacitor is connected to a battery. The space between the two plates is empty. If the separation between the c
    14·1 answer
  • what is the kinetic energy of a hammer that starts from rest and decreases its potential energy by 10k?
    14·1 answer
  • The binding energy of a nucleus can be found using
    14·2 answers
  • HELP PLEASE: Which option is an example of an object that has potential energy followed by an object that has kinetic energy?
    10·1 answer
  • B) Write the name of the devices<br>which are shown in the given<br>figures and write their uses​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!