Use the passage from “The Science Behind Why Your Shoelace Knot Is Doomed to Fail” by Nsikan Akpan to answer the question. Connection: The g-forces put pressure on the knots in the same way they put pressure on the body and spine. Which pieces of evidence support the connection? Select the two correct answers. (1 point) Responses “To break down the physics of the phenomena, the researchers attached a small device to the free end of the laces that measured acceleration, and then Gregg went for a walk or a jog.” “To break down the physics of the phenomena, the researchers attached a small device to the free end of the laces that measured acceleration, and then Gregg went for a walk or a jog.” “The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform.” “The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform.” “Your foot is experiencing these really high g-forces as you’re running all the time.” “Your foot is experiencing these really high g-forces as you’re running all the time.” “We were surprised that the accelerations were so high.” “We were surprised that the accelerations were so high.” “This acceleration creates inertia, which is the tendency for an object to keep moving once it is in motion.”

Answer 1

The two pieces of evidence that support the connection are:

1. “The videos showed as the shoelaces bounce up and down with each footfall, the main knot begins to deform.”
2. “Your foot is experiencing these really high g-forces as you’re running all the time.”

These statements illustrate how the physical forces experienced while running impact both the shoelace knots and the body.