Calculas 1 help!

A 17ft ladder is leaning against a wall. If the bottom of the ladder is pulled along the ground away from the wall at a constant rate of 5ft/s, how fast will the top of the ladder be moving down the wall when it is 8ft above the ground?

Question

Calculas 1 help!

A 17ft  ladder is leaning against a wall. If the bottom of the ladder is pulled along the ground away from the wall at a constant rate of 5ft/s, how fast will the top of the ladder be moving down the wall when it is 8ft above the ground?

paxpolaris · Answer

Chain rule again: |dw:1413435216231:dw|

can you define what you are trying to find?

paxpolaris · Answer

y, x , t, dy/dx , dy/dt , dx/dt ???

anonymous · Answer

oh so this is the pythagoreom theorm?!!

paxpolaris · Answer

yes you need the pythaogorean theorem too

anonymous · Answer

it just asks how fast will top of ladder be moving down the wall when its 8ft above ground

paxpolaris · Answer

how fast the ladder is dropping  ... that is dy/dt...

correct?

anonymous · Answer

|dw:1413435114619:dw|