00:01
Hi there, so for this berlin, we are told that a ball is thrown vertically upward from height.
00:07
So let's notice the height, the initial height, that is equal to six feet.
00:16
And with initial velocity, that is also given, that is equal to 65 in units of feet per second.
00:25
So the question is, how high will the ball go? so the question in this case is the maximum height.
00:35
So for this we can use kinematics.
00:38
We can use that the final speed square is equal to the initial speed square in this minus 2 times acceleration due to gravity times the height.
00:48
If we consider in this case, well, this is the change in the height, sorry.
00:57
At the maximum high, we know that the vertical speed is the speed is a high, sorry.
01:03
Is momentarily equals to zero.
01:07
And then we know that this change in the height is the initial height, well, the maximum height, the one that we need to determine, minus the initial height.
01:17
Then, we will have then in here that this is the initial speed square minus two times acceleration to the gravity, the maximum height, minus the initial height...