- #1

denzel

- 9

- 0

*I've been trying to study for my final and I can't seem to figure out how is this suppose to work.*

1. Homework Statement

1. Homework Statement

A wall (m infinite, v=0) hits a car (m=2600 kg; v=142 km/h). The car becomes deformed and the crush zone (0.7 m) is compressed. Calculate the corresponding acceleration (assuming a constant value). Within which time interval does that compression happen? Try to find out, how fast each part of the airbag system therefore has to operate. Imagine the crush-zone is replaced by a spring. Calculate the required spring constant.

## Homework Equations

## The Attempt at a Solution

I think it has to do with Newtons second law but I don't know what to do with that velocity.