A 13 ladder is leaning against a wall. Then tom begins pulling the foot of the ladder away from the wall at a 0.5 ft/s. How fast is the top of the ladder sliding down when the foot of the ladder is 5ft from the wall?

Question

amistre64 · Answer

what have you drawn up to help you work this out?

amistre64 · Answer

its usually assumed that the wall and floor make a 90 degrees ... the ladder represent the hypotenuse

amistre64 · Answer

consider using the pythag thrm and implicilty differentiate it ... then fill in the known values to determine the unknown