In the figure below, student "a" has a mass of 95 kg and student "b" has a mass of 77 kg. They sit in identical office chairs facing each other.  Student "a" places his bare feet on the knees of student "b", as shown. Student "a" then suddenly pushes outward with his feet, causing both chairs to move.  During the push and while the students are still touching one another:

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 55PQ
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In the figure below, student "a" has a mass of 95 kg and student "b" has a mass of 77 kg. They sit in identical office chairs facing each other.  Student "a" places his bare feet on the knees of student "b", as shown. Student "a" then suddenly pushes outward with his feet, causing both chairs to move.  During the push and while the students are still touching one another:

  • neither student exerts a force on the other.
  • student "a" exerts a force on student "b", but "b" does not exert any force on "a".
  • each student exerts a force on the other, but "b" exerts the larger force.
  • each student exerts a force on the other, but "a" exerts the larger force.
  • each student exerts the same amount of force on the other.
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