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Answer 1 · 2015-09-14T15:43:20

#"5 ms"^(-2)#

Force is defined as

#F = m * a#

This means that the acceleration of the book will be

#a = F/m#

You need to convert the mass of the book from grams to kilograms because

#"1 N" = "1 kg" * "1 ms"^(-2)#

Put all this together to get

#a = F/m = (1 color(red)(cancel(color(black)("kg"))) * "ms"^(-2))/(200 * 10^(-3)color(red)(cancel(color(black)("kg")))) = 5 "ms"^(-2)#