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UkoKoshka [18]
4 years ago
7

Give at least two similarities and differences among the terrestrial planets Mars Venus and Earth​

Physics
1 answer:
Viktor [21]4 years ago
5 0

Answer:

Answer is as follow:

Explanation:

With a distance of just 6,792 km, Mars is even smaller. And again, Venus would be almost Earth's double in terms of scale. It has 81 percent of the earth 's volume, while Mars has just 10 percent of the earth 's mass. Mars and Venus have very different ecosystems, and they are both very separate from Earth.

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an athlete sprints from 150 m south of the finish line to 65 m south of the finish line in 5.0s what is his average velocity
MatroZZZ [7]
  • Total displacement=150-65m=85m
  • Time=5s

\\ \rm\longrightarrow Avg\:Velocity=\dfrac{Total\:Displacement}{Total\:Time}

\\ \rm\longrightarrow Avg\:Velocity=\dfrac{85}{5}

\\ \rm\longrightarrow Avg\:Velocity= 17m/s

6 0
3 years ago
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You are pushing a 20-kg box along a horizontal floor. Friction acts on the box. When you apply a horizontal force of magnitude 4
LenKa [72]

Answer:

a = 2.6\,\frac{m}{s^{2}}

Explanation:

The first box has the following equation of equilibrium:

\Sigma F = F - f = 0

f = F

f = 48\,N

The coefficient of friction is:

\mu_{k} = \frac{f}{m \cdot g}

\mu_{k} = \frac{48\,N}{(20\,kg)\cdot (9.807\,\frac{m}{s^{2}} )}

\mu_{k} = 0.245

There is a net acceleration, when horizontal pushing force is increased:

\Sigma F = F - f = m\cdot a

a = \frac{F-f}{m}

a = \frac{100\,N-48\,N}{20\,kg}

a = 2.6\,\frac{m}{s^{2}}

7 0
3 years ago
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As a ball falls freely toward the ground, its kinetic energy
Anni [7]

Answer:

increases.

Explanation:

As a ball falls freely towards the ground, it's kinetic energy increases. If the kinetic energy increases, that means the object hasn't hit the bottom yet. If the ball continues to fall freely towards the ground, the air gives it more pressure, after that the pressure begins to increase.

4 0
3 years ago
Would the forces acting on the sky diver be balanced or unbalanced? Explain your answer.
docker41 [41]

Answer:

your mom is balanced!!!

4 0
3 years ago
Why did people think that Pluto was a planet in the decades after its discovery
Semenov [28]

Answer:

Pluto is no longer considered a planet as a result of it's small size on the IAU scale.

Explanation:

5 0
3 years ago
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