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
Burka [1]
3 years ago
6

Winston stands on the edge of a building's flat roof, 12 m above the ground, and throws a 147.0-g baseball straight down. the ba

ll hits the ground at a speed of 18 m/s. what was the initial speed of the ball?

Physics
1 answer:
Volgvan3 years ago
6 0
Assume theres no air reaistance. (or else the ball will oppose the motion of the ball, hence decrease the velocity increase)
see if there are any problems!

You might be interested in
30. How do you make a conclusion?
FromTheMoon [43]
B. You compare the data
6 0
3 years ago
Which element is used as rat poison
fredd [130]
Im sure the answer is thallium
3 0
3 years ago
Read 2 more answers
How would the photos set up change the mechanical advantage of lifting the block as compared with lifting the block without a le
lisabon 2012 [21]
<h3>Answer:</h3>

  The mechanical advantage would decrease, making the block more difficult to lift.

<h3>Explanation:</h3>

The mechanical advantage in such a setup is the ratio of distance from A to B to the distance from D to B. In this picture, that ratio is less than 1, meaning the advantage of having this setup is less than the advantage of no setup at all.

While the force required to lift the block is increased by this setup, the distance over which that force is applied will be smaller for raising the block to a given height. (Overall, for the same height, more work is required with the lever setup because you're raising part of the mass of the lever as well as the mass of the block.)

5 0
3 years ago
Read 2 more answers
The eagles suck, so do the giants and the jets and jaguars are irrelevant<br><br>anyone wanna argue
kompoz [17]

Naw ur pretty accurate, heck collage is the only football worth watching most the time. Hook'um horns!

8 0
3 years ago
The star Antares has an apparent magnitude of 1.0, whereas the star Procyon has an apparent magnitude of 0.4. Which star appears
Anika [276]

Answer:

Procyon appears brighter in the sky

Explanation:

Apparent magnitude of star Antares = 1.0

Apparent magnitude of star Procyon = 0.4

Pogson's Ratio

m₂-m₁ =  -2.50 log(B₂/B₁)

where, m is the apparent magnitude

B = Brightness of star or flux coming towards us (W/m²)

∴Larger magnitudes correspond to fainter stars so here 1>0.4 which means Antares appears dimmer and Procyon appears brighter.

6 0
3 years ago
Other questions:
  • A scientist prepares a colloidal solution and pours it into a glass tank. She then flashes a beam of white light into one end of
    9·2 answers
  • describe what happens to the arrangement of water molecules as ice is\to liquid to vapor be sure to explain the temperature chan
    6·1 answer
  • If you exert a horizontal force of 200 N to slide a crate across a factory floor at constant velocity, how much friction is exer
    8·1 answer
  • Where does an electron in a metal get enough energy to escape from its atom as hypothesized in the photoelectric
    9·2 answers
  • You can see your image in a shiny, flat surface because the light waves are bouncing off the surface back at you. This is an exa
    15·2 answers
  • Which of these cultures did NOT make major contributions to astronomy?
    13·1 answer
  • What is average velocity?
    7·2 answers
  • 4. Una cuerda de acero de piano mide 1.60 m de longitud y 0.20 cm de diámetro. ¿Cuál es la tensión en la cuerda si se estira 0.2
    13·1 answer
  • Im pregnaunt at the age 12 what shall i do now ??<br><br> i do live my belly bump&lt;3
    15·2 answers
  • When cattle are processed, what is the most likely use for the animals' skin?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!