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
Lena [83]
3 years ago
9

You drop a rock down a well that is 11.5 m deep.How long does it take the rock to hit the bottom of the well ?

Physics
1 answer:
ziro4ka [17]3 years ago
4 0
The acceleration of gravity depends on the distance from
the center of the Earth.  We use 9.8 m/s² for any place that's
on the Earth's surface, or reasonably close.  The 11.5 meters
down into the well certainly qualifies.

The formula we want is: 

                          Distance of fall = (1/2) · (acceleration) · (time)²

                                  11.5 m      = (1/2) (9.8 m/s²) (time)²

Divide each side
by  4.9 m/s² :            (11.5m) / (4.9 m/s²)  =  time²

                                         2.347 sec²        =  time²

                                   time = √(2.347 sec²)  =   1.53 seconds  .
You might be interested in
The rate at which an object moves
sergejj [24]
The rate at which an object moves is called speed or velocity depending if the direction does or doesnt matter

3 0
2 years ago
Read 2 more answers
What is the frequency of sound waves whose wavelength is 0.25 m on a day when the air temperature is 25 degree Celsius? Group of
Dvinal [7]

Answer:1384 Hz

Explanation:

Given

wavelength(\lambda )=0.25 m

Temperature T=25^{\circ}

at T=25^{\circ} velocity of sound is 346 m/s

and we know

velocity=frequency\times \lambda

v=f\times \lambda

346=f\times 0.25

f=1384 Hz

5 0
3 years ago
Read 2 more answers
Explain what is meant by “In Phase” and “Out of Phase?
LekaFEV [45]
In phase would mean both waves are at a positive peak, out of phase would mean one is at a positive whilst the other is at a negative. Out of phase would mean the waves cancel each other out
5 0
3 years ago
Read 2 more answers
What . Slides are placed upside down in a slide projector to correct for the _______ image produced. A. magnified B. inverted C.
Yuri [45]
<span>The correct answer is B. Inverted image. This is because of all the lenses and light refractions and what not. The same things happens with our eyes except our brains fix the inverted image automatically. Since there are no brains in a projector, you have to fix it on your own by putting it in reverse.</span>
5 0
2 years ago
Read 2 more answers
A school bus transporting students to school is an example of
Andru [333]
The last one, Kinetic energy bc it is taking them to school
4 0
3 years ago
Read 2 more answers
Other questions:
  • A loop of wire lies flat on the horizontal surface in an area with uniform magnetic field directed vertically up. The loop of wi
    10·1 answer
  • A hot air balloon is flying above Grovenburg. To the left side of the balloon, the balloonist measure the angle of depression to
    8·1 answer
  • According to Newton’s law of universal gravitation, the sun would have blank gravity than earth because it is more blank
    9·2 answers
  • A steam catapult launches a jet aircraft from the aircraft carrier john C. Stennis, giving it a peed of 175 mi/h in 2.50 . (a) F
    7·1 answer
  • You throw a bowling ball down an alley with speed v_0v ​0 ​​ , and initially it slides without rolling. After a little while fri
    11·1 answer
  • On your business card , you position your businesses as "the area's most creative cookery " this phrase is your
    11·1 answer
  • A force of 30 N is applied tangentially to the rim of a solid disk of radius 0.10 m. The disk rotates about an axis through its
    9·1 answer
  • How long did it take the shuttle shock to fall 12 meters
    5·1 answer
  • A tennis ball moves 16 meters northward, then 22 meters southward, then 12 meters northward, and finally 32 meters southward.
    13·1 answer
  • ASAP Even though the force exerted on each object in a collision is the same strength, if the objects have different masses, the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!