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Leya [2.2K]
3 years ago
13

Planets orbit the Sun, while the Moon and other satellites orbit the Earth. Such orbital motion is the result of _______ and eac

h satellite's forward inertia.
Physics
2 answers:
Morgarella [4.7K]3 years ago
5 0

Answer:

Earth

Explanation:

mezya [45]3 years ago
3 0
<span>Gravity. The pull of gravity keeps the planets, Moon, and satellites from just continuing in a straight line off into space. It also keeps you able to walk to school or ride a school bus -- without it there would be no friction you could use to propel yourself.</span>
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Force = mass times acceleration
Alona [7]

Yes indeed ! Very good !


3 0
3 years ago
A constant friction force of 25 Nacts on a 65 kg skier for 20
Radda [10]

Answer:

The skier's change in velocity is 7.69 meters per second.

Explanation:

The Newton's second law tells force is equal to the change on the linear momentum of a body:

\sum\overrightarrow{F}=\frac{d\overrightarrow{p}}{dt}

If we approximate the differential \frac{d\overrightarrow{p}}{dt} to \frac{\Delta\overrightarrow{p}}{\Delta t}:

\sum\overrightarrow{F}=\frac{\Delta\overrightarrow{p}}{\Delta t}

Using that linear momentum is mass times velocity:

\sum\overrightarrow{F}=\frac{m\Delta\overrightarrow{v}}{\Delta t}

Solving for \Delta\overrightarrow{v}:

\Delta\overrightarrow{v}=\frac{\Delta t\sum\overrightarrow{F}}{m}=\frac{(20\,s)(25\,N)}{65\,kg}

\Delta\overrightarrow{v}=7.69\,\frac{m}{s}

3 0
3 years ago
Please help, confused on this whole lesson
ira [324]

Answer:

1,4,3and 2 would happen hope this helps

3 0
3 years ago
Read 2 more answers
Controlled variables
PilotLPTM [1.2K]

Answer:

A control variable in scientific experimentation is an experimental element which is constant and unchanged throughout the course of the investigation.

Explanation:

7 0
3 years ago
A car moving at a speed of 20m/s has a kinetic energy of 300,000 J what’s the cars mass
Alexxx [7]

Answer:

<h2>1500 kg</h2>

Explanation:

The mass of the car can be found by using the formula

m =  \frac{2k}{ {v}^{2} }  \\

From the question we have

m =  \frac{2 \times 300000}{ {20}^{2} }  =  \frac{600000}{400}  =  \frac{6000}{4}  \\

We have the final answer as

<h3>1500 kg</h3>

Hope this helps you

7 0
3 years ago
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