Me i’ve been stuck on this forever now ☹️

Hey !  If you've already been stuck on it forever, then
a few more days won't make that much difference.

No, I'm just kidding.  I wouldn't do that to you.

I'm sure this is all stuff that you've heard before.
Here it is again, all in one place:


-- LOCATION . . . . . a point.
If you move from one point to another point, then you travel a
 
-- DISTANCE . . . . . the path you followed between two points.
If you're moving right now, then how fast you're moving is your

-- SPEED . . . . . the RATE of how fast your distance is changing.
If we also know what DIRECTION you're moving, then we know your

-- VELOCITY . . . . . your speed AND direction.
If your speed is changing OR your direction is changing, then you have 

-- ACCELERATION . . . . . the RATE of how fast your speed or your direction is changing.


Go through it again, in the other direction:

Acceleration . . . the rate of how fast your velocity is changing.

Velocity . . . your speed AND your direction.

Speed . . . the rate of how fast your distance is changing.

Distance . . . the length of the path you walk from one place to another.


For the question on the screen:

Instantaneous acceleration describes how fast a velocity is changing
at a specific instant.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.