Question

A person washing the windows of an office building drops a squeegee from a height
of 60 feet. How long does it take the squeegee to pass by another window washer
working at a height of 20 feet?

Answer 1

For the squeegee to pass by another window washer working at a height of 20 feet, it will take the squeegee 1.6 seconds.

Squeegee passage:

Using this model: h(t)= h0-16t²

Where:

h(t)=20

Let plug in the formula

60-16t²=20

-16t²=-40

t²=10÷4

t=±√10÷4

t=±√10÷2

t=3.16÷2

t=1.58 seconds

t=1.6 seconds (Approximately)

Inconclusion for the squeegee to pass by another window washer working at a height of 20 feet, it will take the squeegee 1.6 seconds.

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