The student is standing still on level ground. What is the magnitude of the net force on the student? What is the magnitude of the contact force on the student by the backpack? What is the magnitude of the contact force on the student by the ground?
Which is the stronger force, the force on the backpack by the student or the weight of the backpack? Which is the stronger force, the force on the student by the backpack or the weight of the backpack?
Which is the stronger force, the force on the backpack by the student or the weight of the backpack? Which is the stronger force, the force on the student by the backpack or the weight of the backpack?