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Chapter 11: Q. 8 (page 286)

Automobiles are designed with “crumple zones” intended to collapse in a collision. Use the ideas of this chapter to explain why.

Short Answer

Expert verified

The crumple zones increases the time of the contact between the outer object and the passenger's zone, so less force is exerted.

Step by step solution

01

Given Information 

We need to find why Automobiles are designed with “crumple zones” intended to collapse in a collision .

02

Explanation

When an object receives a force for a short time, this force with time is called the impulse,

in force-versus time graph the momentum is same.

Hence, impulse is given by

impulse=jx=Fx△t(1)

Where jxis impulse.

After solving the equation

Fx=jx△t=△p△t(2)

Force is inversely proportional to time△t . less force is excerted when, the crumple zone increases the time of the contact between the passenger's zone and the colliding object.

the time of contact to the passenger zone decreases in the absence of crumple zone. so force increases and harm the passengers zone.

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