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REY [17]
3 years ago
5

A car traveled 210 km in 1.5 hrs, what was the car's average speed?

Physics
1 answer:
Bess [88]3 years ago
5 0

Answer:

140km/h

Explanation:

Average speed= Distance/Time

= 210/1.5

= 140 I'm/h

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Which would require the greater energy; slowing down of the orbital speed of the Earth so it crashes into the sun, or speeding u
tresset_1 [31]

Answer: Speeding up the orbital speed of earth so it escapes the sun require the greater energy.

Explanation: To find the answer, we need to know more about the Orbital and escape velocities.

<h3>What is Orbital and Escape velocity?</h3>
  • Orbital velocity can be defined as the minimum velocity required to put the satellite in its orbit around the earth.
  • The expression for orbital velocity near to the surface of earth will be,

                   V_o=\sqrt{gR}

  • Escape velocity can be defined as the minimum velocity with which a body must be projected from the surface of earth, so that it escapes from the gravitational field of earth.
  • The expression for orbital velocity will be,

                    V_e=\sqrt{2gR}

  • If we want to get into the sun, we want to slow down almost completely, so that your speed relative to the sun became almost zero.
  • We need about twice the raw speed to go to the sun than to leave the sun.

Thus, we can conclude that, the speeding up the orbital speed of earth so it escapes the sun require the greater energy.

Learn more about orbital and escape velocity here:

brainly.com/question/28045208

#SPJ4

3 0
2 years ago
There is a filing cabinent that is 52 in. tall and 15 in. wide. The center of gravity of the cabinet is right at the center. To
erastova [34]

Answer:

16 degrees

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The tipping point of the cabinet is sketched below.

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1 year ago
Which statement describes why scientists notation is useful
aniked [119]

On the list of choices that you provided, there is no such statement.

6 0
3 years ago
When you float an ice cube in water, you notice that 90% of it is submerged beneath the surface. Now suppose you put the same ic
Gwar [14]

Answer:

option (c)

Explanation:

90% of the body is submerged in water.

Now it is immersed in an unknown liquid whose density is less than the density of water.

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As the density of liquid is less than the density of water, so the buoyant force acting on the body by the unknown liquid is less than water. So it is submerged less than 90% in this liquid.

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Sug<br>. To repeat the experiment what is it?<br>​
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Answer:

....more foam

Explanation:

7 0
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