Physics, 17.12.2020 19:50 skatingby7522
How does Newton's first law help explain how seat belts work when a vehicle abruptly stops?
A. Seat belts negate the forces acting on a person's body.
Seat belts exert a force equal and opposite to the force the vehicle exerts on a person's
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body.
OC. Seat belts provide the unbalanced force needed to stop the motion of a person's body.
Seat belts counteract the motion of a vehicle and a body's momentum to balance the
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forces acting on the person's body.
Answers: 3
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The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
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How does Newton's first law help explain how seat belts work when a vehicle abruptly stops?
A. Seat...
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