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What is the acceleration of a 20kg pail of cement that is pulled upward (not sideways)

with a force of 300N.

let g= 10m/s^2

Answer:

20kg*10m/s^2 = 200N

a = (300N-200N)/20kg

a = 5m/s^2

The book gives me the answer as 2m/s^2...

did I miss something? I beleive this to be a type o in the book.