00:01
I'm a big fan of drawing out the visual first.
00:05
So the bottom is one meter from the ground.
00:09
So when you get on the ferris wheel, that's where you're at.
00:12
We reach a maximum above the ground at 16 meters.
00:19
So up here gets you to 16.
00:22
And then the fact that it says you finish one revolution after 18 seconds, well, then you're back to one.
00:30
So that actually tells me, since this number is 18, then right here would have to be 9 halfway between.
00:37
And the very first question, i don't really like how it's written because it's two different questions.
00:44
What is the period? well, the period is actually how long it takes to finish one revolution.
00:51
So it should be 18 seconds.
00:53
So it was written right in the directions.
00:56
But the amplitude is a lot more complicated to figure out.
00:59
The first thing i like to do is figure out the midline.
01:03
Now what the midline would be is averaging the max and the min.
01:08
So 16 plus 1 and divided by 2.
01:11
So you could probably leave it at 17 halves, but that would also be the same as 8 .5.
01:19
And then from there, the amplitude would be that max of 16.
01:24
Let me just write it right here.
01:26
Minus that 8 .5.
01:28
So the amplitude will equal 7 .5...