Recent content by zelphics

yea so da/dt(2a) + db/dt(2b) = dc/dt(2c)?

2a + 2b = 2c?

i don't understand how that works? but it would be: 60^2 + 90^2 = C^2

i know how to differentiate both sides, but i don't even have two sides...

i don't care that you were wrong, i just have no idea where to start? and I am not sure i understand the notation..

wouldn't they be asking for velocity or rate, not acceleration?

Homework Statement A baseball diamond is a square 90 feet on a side. A player runs from first base to second at a rate of 16 ft/sec. At what rate is the player's distance from third base changing when the player is 30 ft from first base.. Homework Equations dr/dt ds/dt dx/dt...

i added you, my aol name is the same as it is on here.

its not your fault, its a tricky question...and you got farther than me - so it was helpful!

that would be really helpful if you could help me, but i don't want to keep you up - maybe we shouldn't use this forum as a chat room though =p

im still on #3, are there any pages in the book that are helpful? i read it a million times...

do you guys have aol or something? i am soo confused - I am not even going to sleep tonight =[

aaron? from my physics class at FM? NO WAY...it's zach!

Learningphysics: I can't just plug in the mass of the earth... D H: Newtons second law is F = ma, I have no idea - I am really confused.

Homework Statement A communication satellite is in circular orbit around the Earth at 36,000 km above the earth. Starting with Newton's law of gravitation, determine the velocity of the satellite. The only numerical values you are allowed to substitute in solving this problem are the radius of...