Two football linemen push against each other in practice. They do not move, but then lineman B moves forward and lineman A moves backward.
Why does this happen?
Question 4 options:
Because the lineman push in different directions, the net force is zero.
When the lineman push on each other, they cause action-reaction forces that are unequal.
The forces are balanced, but then line B exerts a greater force, causing unbalanced forces.
Lineman A pushes with a greater force, causing a net force that acts in his direction.
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