Question: Some roadside barriers are made from long thick wires as illustrated. The wire barrier behaves like a spring. When a car collides into the wire
Some roadside barriers are made from long thick wires as illustrated. The wire barrier behaves like a spring. When a car collides into the wire barrier, the car slows down to a stop and the wires are stretched so that they are longer than they were before the crash. In addition, cars are constructed in such a way that parts of the car including the bumpers "compress" like a spring when the car collides with objects. See Roadside Wire Barrier.pdf Select the best answer for the interaction between the wire barrier and colliding car that comes to stop. Hint: Consider the wire barrier to act like a tennis racket and the car like a tennis ball for the situation in which a tennis ball collides with the tennis racket resulting in the ball slowing down! Option A The wire barrier transfers energy to the car during a contact push/pull interaction resulting in a decrease in elastic potential energy for the wire barrier and an increase in kinetic energy for the car. Option B The car transfers energy to the wire barrier during a contact push/pull interaction resulting in a decrease in kinetic energy of the car and an increase in
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