(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A silo is under construction and a large brick is being hoisted up at a constant speed of 3.2m/s. The rope breaks when the brick is at a height of 28m above the ground.

a) find the greatest height reached by the brick.

2. Relevant equations

i know which equation to use:

v^2 = vo^2 = 2a(x2-x1)

3. The attempt at a solution

At the greatest height, i know final velocity will be zero.

in the solution, a is negative. this is where i get confused....i thought a is negative therefore slowing down, but is a negative because it's going down?

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# Homework Help: Simple problem, but confused with acceleration of gravity

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