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3 years ago

Test Due! Which statement is true?

Physics

1 answer:

Lubov Fominskaja [6]3 years ago

8 0

The correct answer is C. Mercury and Mars have the same gravitational force

Explanation:

This chart compares the different features of two planets in our solar system (Mercury and Mars). In this chart, the only numerical value or feature that is the same for both planets is gravity because for both planets gravity is 1.7 m/s2. This implies the gravitational force or the force that attracts objects towards the center of the planet is the same or that objects are pulled with the same force in both planets. Moreover, this factor depends on others such as mass, density, among others.

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Reika [66]

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3 years ago

Gravitational potential energy is proportional to both mass and height above a reference level.

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4 years ago

What is the leading hypothesis for venus’s lack of water?

nadya68 [22]

Answer:

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Explanation:

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3 years ago

If we have a velocity of 20 m/s and our acceleration is -5 m/s, then after 2 seconds our velocity will be....

svetoff [14.1K]

Answer:

v = 10 m/s

Explanation:

We have,

Our initial velocity is 20 m/s

Our acceleration, $a=-5\ m/s^2$

It is required to find the velocity after 2 seconds. It is a concept based on equation of kinematics. Using first equation:

$v=u+at$

Plugging all the known values

$v=20+(-5)(2)\\\\v=10\ m/s$

So, our final velocity is 10 m/s.

6 0

4 years ago

A boat covered 5/9 of a journey at an average speed of 25

Lera25 [3.4K]

Answer:

Thus, the time for the remaining 120 miles: 8.5 - 6 = 2.5 h

Explanation:

The remaining 120 miles was (1 - 5/9 = 4/9) of the total journey.

Then, total distance: 120 ÷ 4/9 = 120 × 9/4 = 270 miles

The distance for 25 mph: 270 × 5/9 = 150 miles

The time for 25 mph: 150 ÷ 25 = 6 h

7 0

3 years ago