A 15 foot ladder is leaning against a wall. If the top slips down the wall at a rate of 4 ft/s, how fast will the foot be moving away from the wall when the top is 11 feet above the ground? The foot will be moving at ft/s.

A 15 foot ladder is leaning against a wall. If the top slips down the wall at a rate of 4 ft/s, how fast will the foot be moving away from the wall when the top is 11 feet above the ground? The foot will be moving at ft/s.

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter6: Vector Spaces

Section6.7: Applications

Problem 18EQ

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Question

A 15 foot ladder is leaning against a wall. If the top slips down the wall at a rate of 4 ft/s,
how fast will the foot be moving away from the wall when the top is 11 feet above the
ground?
The foot will be moving at
ft/s.

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