can someone help me answer this?

Question

in the late 1600s sir isaac newton explained why the moon, even though pulled strongly by earths gravity, does not come crashing into earth. the answer has to do with the moons motion. newton explained that the moon has two motions, both occurring at the same time.
* the motion is the moon falling toward earth
* the second motion is the moon traveling forward in a straight line.
newton concluded that the sum of these two motions(occurring at the same time)is a nearly circular path, the moons actual orbit around earth.
what other motions could newton have explained by using his ideas about the moon?
A.the dropping of an apple from a tree
B.the movement of earth around the sun
C. the daily rotation of earth
1. A only
2. B only
3. C only
4. both A and B
5. both B and C

Answer 1

There is a reason why Newton's theory is called "Universal" gravitation...

Answer 2

A and B.

The Earth's orbit around the sun is the same principle as all satellites. The Earth is trying to move forward in a straight line, but the sun's gravity is pulling it. The equilibrium between the two forces causes the Earth to assume am orbit.

With the apple, the motion is straight towards the centre of the Earth's gravity and thus the two forces (inertia of the apples motion and gravitational pull) are working together.

If you throw an apple, it assumes a curved motion (parabolic) which is a balance between gravity and the momentum you have given the apple. Throw it hard enough and you could put it into orbit where the inertia you gave it is balanced by the gravity.

Of course that is only possible in space because down here, air resistance will slow your apple down.

Answer 3

The effect of earth's gravity on the moon is that it pulls the moon one twentieth of an inch per second towards the earth but the forward motion of the moon is just enough to compensate tor this amount of curvature in the earth's surface, this is precisely how a satellite launched from earth stays in orbit. B only.

Answer 4

B

Earth is falling towards the sun (gravitational pull) and the Earth is traveling forward in a straight line. If it were not for the Sun, the Earth would continue to travel in a straight line into space. Since the sun is so large, the gravitational pull of it brings it closer to the center of the sun .

Answer 5

5. Both B and C.
I think because his experiment was about the rotation and orbit of the moon around the Earth and B and C both relate rationally.

Answer 6

I think the answer should be all three (a,b, and c). Newton first theorized gravity, thus giving him the theorization of answers b and c.

Answer 7

both a and b

Answer 8

B.

Answer 9

ABCDEFG....