00:01
Is we're looking at our scenario here that christine is throwing a ball straight up, an initial speed of 15 meters per second.
00:13
Okay.
00:15
So what we're looking at here is, is there a difference between the, basically placing at y equals zero or y equals 1 .5 meters above the floor? okay.
00:29
So will this change the maximum height above the floor obtained? use the energy interaction model to answer this question.
00:37
So right off the bat, it will not change.
00:43
Visually, let me just show this real quick.
00:46
If we do this where we define it as 1 .5, who's going to go up in the air like this, and it comes down here.
00:54
That's like my quadratic model and it reaches its max height.
00:56
But if i make it look like this, where this is y -go -0, it's still going to be the same height here because it's going to come down and hit the floor here, it's just going to be at like a negative y value at that point, even though negative y doesn't make sense.
01:10
In terms of the energy interaction model, this involves considering the conservation mechanical energy in the absence of non -conservative forces like air resistance, which we are allowed to ignore here.
01:22
So our mechanical energy at any point during the ball's flight can be given by the sum of its kinetic energy, so kinetic energy, and gravitational potential energy...