Question

1. ____ reduce the impact forces of a crash exerted upon a vehicle’s occupants by allowing parts of the front of the vehicle to crush at varying rates.

\ta) crumple zones
\tb) crush zones
\tc) crash zones
\td) airbags

1. if vehicles are the same weight, the vehicle with the ____ speed will have the greater force of impact.

\ta) better
\tb) higher
\tc) consistent

Explanation:

Question 3

Crumple zones (also known as crush zones or crash zones, but "crumple zones" is the standard term) are designed in vehicles to absorb and dissipate the energy from an impact by allowing parts of the vehicle's front (or other areas) to deform or crumple at varying rates. This reduces the impact forces transmitted to the occupants. Airbags protect by cushioning, not by allowing parts to crush. So the correct term for this function is crumple zones.

The force of impact in a collision (for vehicles of the same weight) is related to speed. The formula for kinetic energy is $KE = \frac{1}{2}mv^2$, and force in a collision is related to the change in momentum (which is also related to speed, as momentum $p = mv$). A higher speed means more kinetic energy and a greater change in momentum, leading to a greater force of impact. "Better" and "consistent" don't relate to the physical relationship here, while "higher" speed is the factor that increases impact force for same - weight vehicles.

Answer:

a) Crumple zones

Question 4