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
irina1246 [14]
3 years ago
9

In a bizarre but harmless Superman fell from the top of the Eiffel How fast was Superman traveling when he hit the ground 7.80 s

econds after falling ?

Physics
1 answer:
brilliants [131]3 years ago
5 0
Vf = final velocity
Vi = initial velocity
g = acceleration due to gravity
t = time

Vf = Vi + gt

Vf = 0 + (9.8)(7.80)
Vf = 76.44 m/s
You might be interested in
Plz answer my question below....
katrin2010 [14]
It should be YY or Yg
7 0
3 years ago
A snowmobile has an initial velocity of 4.7 m/s.
zimovet [89]
Q1. The answer is 8.788 m/s

V2 = V1 + at
V1 - the initial velocity
V2 - the final velocity
a - the acceleration
t - the time

We have:
V1 = 4.7 m/s
a = 0.73 m/s²
t = 5.6 s
V2 = ?

V2 = 4.7 + 0.73 * 5.6
V2 = 4.7 + 4.088
V2 = 8.788 m/s


Q2. The answer is 9.22 s

V2 = V1 + at
V1 - the initial velocity
V2 - the final velocity
a - the acceleration
t - the time

We have:
V2 = 0   (because it reaches a complete stop)
V1 = 4.7 m/s
a = -0.51 m/s²
t = ?

0 = 4.7 + (-0.51)*t
0 = 4.7 - 0.51t
0.51t = 4.7
t = 4.7 / 0.51
t = 9.22 s
3 0
3 years ago
Which of the following is not an example of work?
Ivahew [28]

Answer:

3 a is the ans i think so ....

7 0
3 years ago
The earth and the moon exert forces on each other which forces is greater? explain
Helen [10]

Thank you for your question, what you say is true, the gravitational force exerted by the Earth on the Moon has to be equal to the centripetal force.

An interesting application of this principle is that it allows you to determine a relation between the period of an orbit and its size. Let us assume for simplicity the Moon's orbit as circular (it is not, but this is a good approximation for our purposes).

The gravitational acceleration that the Moon experience due to the gravitational attraction from the Earth is given by:

ag=G(MEarth+MMoon)/r2

Where G is the gravitational constant, M stands for mass, and r is the radius of the orbit. The centripetal acceleration is given by:

acentr=(4 pi2 r)/T2

Where T is the period. Since the two accelerations have to be equal, we obtain:

(4 pi2 r) /T2=G(MEarth+MMoon)/r2

Which implies:

r3/T2=G(MEarth+MMoon)/4 pi2=const.

This is the so-called third Kepler law, that states that the cube of the radius of the orbit is proportional to the square of the period.

This has interesting applications. In the Solar System, for example, if you know the period and the radius of one planet orbit, by knowing another planet's period you can determine its orbit radius. I hope that this answers your question.


8 0
3 years ago
Explain the differences between horticulture and agriculture.
sammy [17]
<h2><u>Hello </u><u>There</u></h2>

\tt{Difference \:  Between \:   \underline\red {Horticulture} \:  And \:   \underline\green{Agriculture}}

\text{\underline\red {Horticulture}}

The Cultivation of Fruits, Vegetables and Flowers for domestic and international markets are called Horticulture.

\text{\underline\green{Agriculture}}

It is science, art and occupation of cultivating the soil, producing crops and livestock. It is systematic and controlled use of living organisms and the environment to improve the human condition.

<h3>Hope This Helps</h3>
6 0
2 years ago
Other questions:
  • A rectangular aluminum bar (~1.52.1 cm in cross section) and a circular steel rod (~1 cm in radius) are each subjected to an axi
    8·1 answer
  • The speed of a light wave in a certain transparent material is 0.701 times its speed in vacuum, which is 3.00×108 m/s . When yel
    10·1 answer
  • Arrange the following substances in order of decreasing magnitude of lattice energy. Rank the compounds in order of decreasing m
    13·2 answers
  • The outer core is thought to be a solid layer of the Earth's core. <br><br> True or False?
    5·2 answers
  • Why is there no ideal time of day when all students should study?
    7·2 answers
  • It is weigh-in time for the local under-85-kg rugby team. The bathroom scale used to assess eligibility can be described by Hook
    7·1 answer
  • According to its periodic table entry, how many electrons does nickel have in its valence level?
    6·2 answers
  • A soccerball is kicked straight out from a hill at 15 m/s and lands 42m away. how tall is the hill
    12·1 answer
  • Consider the circuit. Switches are added at points A, B, C, and D. All the switches are closed EXCEPT the switch at position D,
    14·2 answers
  • Who is the first physicist and what what did he invented?​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!