Superman throws a boulder of weight 3500 N at an adversary. What horizontal force must Superman apply to the boulder to give it a horizontal acceleration of 12.7 m/s^2?

I did (3500 N)(12.7 m/s^2) = 44450 N
This answer is wrong. So what's up?

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  1. So answer = 4540!
    Yes physics 221 students, this answer was brought to you by my failure to complete Mastering Physics problem and ended up pressing the show answer button

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  2. May my sacrifice be beneficial to the common good.

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