A 60kg student in a rowboat on a still lake decides to dive off the front of the boat. The student's horizontal acceleration is 2.0 m/s/s while in contact with the boat. What horizontal force does the student exert on the boat?
120 N toward the back of the boat
30 N toward the back of the boat
30 N toward the front of the boat
120 N toward the front of the boat
