Question

What is gravitation?

the effect of air pressure in pushing objects to the ground<<

the tendency of objects to move downward

the attraction of any two objects because of their mass

the attraction or repulsion of objects because of their electric charge

Answer 1

The force of gravity between any two ordinary objects on the earth is __________.

always downward

stronger when closer to the earth<<

stronger if the objects are more massive

stronger than the force of gravity from the earth

Answer 2

What is Kepler's first law of planetary motion?

The period of a planet's orbit is proportional to its distance from the sun.

The eccentricity of a planet's orbit is proportional to its distance from the sun.

Planets have circular orbits.

Planets have elliptical orbits.<<

Answer 3

I put the << symbols next to the choice I thought was the correct one

Answer 4

Do try to limit one question per post, that is if you have any interest of its understanding.

Relating to gravitation, evaluate the multiple choice.
A) Is air pressure necessary for gravity to affect an object (on Earth)?
B) Does an object's inertia describe why it has this tendency?
C) Is attraction relevant?
D) Is attraction of repulsion relevant and especially because of electric charge?

Answer 5

im between A and C because it is about mass but air pressure I think also plays an important role

Answer 6

yes

Answer 7

The first was the effort to understand the motion of objects on the earth

Answer 8

The other effort, to understand the motions of the planets

Answer 9

wait now that I think of it Im 97% sure that choice C is the correct one

Answer 10

All of Newton's 2 Laws of Motion relate to motion of objects on Earth. The 2nd is still applicable, too. So really, your understanding is wrong.

Recall that Newton's 1st Law of Motion states that an object's motion remains in motion or at rest unless acted upon a net external force.

Well, in theory, air pressure can be considered a non-conservative force, and therefore, if it's negligible, really, choice A is wrong.

Answer 11

Newton stated that every two objects in the universe attract each other with a force along the line between them.

Answer 12

@Brrandyn

Answer 13

Well, okay, that's surely applicable to Newton's Universal Law of Gravitation. Now I understand what you are referring to.

Gravitational force between two bodies is \[\alpha ProductOfMass\] (+ more logistics)

So yes, C is correct.

Sorry, I've been struggling with trying to draw a diagram, the borders follow my cursor, quite infuriating.

Answer 14

Do you understand why B and D are incorrect?

Answer 15

yes but my two initial choices were A and C

Answer 16

If atmospheric pressure is gone, theoretically, would it still describe gravitation?

Answer 17

yes

Answer 18

Your response should be "no" because it's no longer apposite.

For B, remember that objects have a tendency to resist change of their current state. Thus, tendency to fall isn't logical. D should be omitted easily.

Answer 19

so then like I said before "wait now that I think of it Im 97% sure that choice C is the correct one"

Answer 20

Yes, I've already given you clarity. However, evaluate your understanding of A.

Answer 21

alright thank you very much and are my other two choices for the next questions correct? @Brrandyn

Answer 22

The gravity of Earth remains constant regardless of its position. If that wasn't the case, well.... (omit excess here).

No, your response to the second question is incorrect.

Recall that the force of gravity of an object is its
Mass∗9.8
Where the "9.8" is measured in m/s/s & is Earth's gravity.

Answer 23

--and for the last question, you're correct.

Answer 24

so the second question would be D?

Answer 25

@Brrandyn