Answer: I think cars are designed to have crumble zone because lets say you're going 60-70 mph and you hit a brick wall that cant move, it would be a very hard jolt causing the beings inside to get thrown forward, but if it has a crumble zone it would slow the the jolt from is slowing down in the hit.
<span> For this case the volume of the box is given by:
</span>

<span> Substituting values we have:
</span>

<span> Rewriting we have:
</span>

<span> Grouping terms of equal degree we have:
</span>

<span> Adding terms of equal degree we have:
</span>

<span>
Answer: the volume of the box is: All the expressions given.</span>
Answer:
1.9976 m
Explanation:
An iron bar whose initial length is 2m has its temperature increased from 20 ° C to 120 ° C. What is the final length of the bar? (consider that the coefficient of expansion of iron) is 1.2 x 10-5 1 / ° C (3 points)
Given that,
Initial length of an iron bar, 
The temperature increased from 20°C to 120°C
The coefficient of expansion of iron is 
We need to find the final length of the bar.
The linear expansion equation is given by :

Where
is the change in length

Also, 
L is final length

So, the final length of the bar is 1.9976 m
There is no correct description on that list of choices.