Sunday

December 21, 2014

December 21, 2014

Posted by **Bob** on Tuesday, September 7, 2010 at 9:48pm.

h t t p : / / b i t . l y / c D H P V M

h t t p : / / b i t . l y / 9 m b y C R

- Physics -
**URGENT**, Tuesday, September 7, 2010 at 9:57pmAnd I still haven't gotten an answer for my previous question here:

h t t p : / / b i t . l y / d g 6 o O F

- Physics -
**bobpursley**, Tuesday, September 7, 2010 at 10:45pmI can't make the "previous" graphic open.

On this problem, label the horizontal distance H (dcosPHI) and the final height yf(dsinPHI)

horizontal:

VcosTheta*time=x=dcosPHI

vertical

yf=VsinTheta*time-1/2 g t^2

from the first equation

time=dcosPHI/VcosTheta

and putting this in the second equation

dsinPHI=VsinTheta*dcosPHI/VcosTheta-1/2 g (dcosPHI/VcosTheta)^2

multiplying both sides by (VcosTheta)^2

dsinPHI(VcosTheta)^2=V^2 sinThetacostheta d cosPHI=1/2 g dcosPHI

so take the derivative of d with respect to theta, set to zero, solve for theta in terms of V and PHI.

A bit of algebra is required, so get a large pad of paper.

- Physics -
**URGENT**, Tuesday, September 7, 2010 at 11:02pmWhat does d= ?

(Not sure what to take the derivative of)

- Physics -
**bobpursley**, Wednesday, September 8, 2010 at 12:49pmd is the height up the hill, as drawn on your figure. As I recall, you are trying to maximize d, so d d/dTheta=0=..

**Answer this Question**

**Related Questions**

Physics - The problem contains graphics that I don't know how to show other than...

computers - Which type of graphics file format keeps track of each individual ...

computer - Which type of graphics file format keeps track of each individual ...

computer - You have inserted an image within a paragraph of text in a word 2007...

computers please check my answer - please see if my answers are correct thanks...

graphics - other than speed of production, what are two advantages of CAG (...

business - What is the impact of computer graphics on the research report ...

geometry - 1. Perform these transformations on ∆TRL and compute the ...

Maths - Graphics Calculators - I need a graphics calculator for my school wok, ...

Computer Vision - Show that the image of an ellipse in a plane, not necessarily ...