brazil-enem 2022 Q92

brazil-enem · Other · enem__day2 Not Maths
At a racetrack, cars can skid on a curve and hit the protective wall. To reduce the impact of a collision, a tire barrier can be placed on the wall, which makes the collision last longer and the car return with reduced velocity. Another option is to place a barrier made of blocks of a material that deforms, making it as long-lasting as the collision with tires, but which does not allow the car to return after the collision. Comparing the two situations, how do the average force exerted on the car and the dissipated mechanical energy compare?
(A) The force is greater in the collision with the tire barrier, and the energy dissipated is greater in the collision with the block barrier.
(B) The force is greater in the collision with the block barrier, and the energy dissipated is greater in the collision with the tire barrier.
(C) The force is greater in the collision with the block barrier, and the energy dissipated is the same in both situations.
(D) The force is greater in the collision with the tire barrier, and the energy dissipated is greater in the collision with the tire barrier.
(E) The force is greater in the collision with the block barrier, and the energy dissipated is greater in the collision with the block barrier.
At a racetrack, cars can skid on a curve and hit the protective wall. To reduce the impact of a collision, a tire barrier can be placed on the wall, which makes the collision last longer and the car return with reduced velocity. Another option is to place a barrier made of blocks of a material that deforms, making it as long-lasting as the collision with tires, but which does not allow the car to return after the collision.\\
Comparing the two situations, how do the average force exerted on the car and the dissipated mechanical energy compare?\\
(A) The force is greater in the collision with the tire barrier, and the energy dissipated is greater in the collision with the block barrier.\\
(B) The force is greater in the collision with the block barrier, and the energy dissipated is greater in the collision with the tire barrier.\\
(C) The force is greater in the collision with the block barrier, and the energy dissipated is the same in both situations.\\
(D) The force is greater in the collision with the tire barrier, and the energy dissipated is greater in the collision with the tire barrier.\\
(E) The force is greater in the collision with the block barrier, and the energy dissipated is greater in the collision with the block barrier.