Monday, October 6th, 2008

Block A Geometry PSP: Finish the worksheet for 4.2 but you may skip 5 and 6.

Block B Elementary Functions PSP: Talking about vertical motion (in one dimension) we were working on #64 from p 185. The question was whether or not we could find the value of Vo. So far we have (sorry these are hard to read)

Height(as a function of time)

H(t) = -16t^2+Vot+0 (the initial height is zero)

We said that we can solve for Vo and it looks like

Vo = (16t^2 + 48) / t or simplified as Vo = 16t + 48/t

We also "knew" two points: (0,0) and (X2,0) so the vertex is located along the axis of symmetry which is x=((X2+0)/2)

Now, this isn't an exact # yet, because we don't know the value of X2, but we can use it still and try to come up with a formula. Think about when we had a V and P (i.e. #43 and 44 from p 183) and we were able to create vertex form equations for parabolas -- is this any different? If you can't figure it out, and you've honestly looked at it for more than 5 minutes TRYING something, please email me. I have the worked out solution that I'd love to share. Also, be sure you bring your homework notebook to class tomorrow.


Block C Geometry PSP:Finish the worksheet for 4.2 but you may skip 5 and 6.