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December 21, 2014

December 21, 2014

Posted by **Reonea** on Sunday, October 30, 2011 at 7:29pm.

Find the velocity of the top of the ladder at time t=1.

The velocity of ladder at time t=1 is __________ ft/sec.

- Calculus -
**bobpursley**, Sunday, October 30, 2011 at 7:33pmlook at the triangle.

c^2=b^2+h^2 b= base, h=height

take derivitave

d c^2/dt=0=2bdb/dt + 2h dh/dt

b=4, db/dt=3ft/sec h=sqrt(18^2-4^2)

find dh/dt

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