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## Homework Statement

What is the minimum work done when a 65 kg student climbs an 8.0 m-high stairway in 12 s?

## The Attempt at a Solution

v=d/t

v=8/12

v=2/3

v = v2+v1 over 2

2/3 = v2+0 over 2

v2 = 2x[2/3]

v2=4/3

w=deltaEk

w=.5x65x[4/3]^2 - .5x65x0

w = 57 j ?

answer is 5100 j