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23 Nov 2019

If you are in an automobile accident with an initial speed of 107km/h and are stopped by an airbag that inflates from the dashboard,over what distance must the airbag stop you for you to survive thecrash?
The human body can survive a negative acceleration trauma incident(sudden stop) if the magnitude of the acceleration is less than 250m/s^2

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Keith Leannon
Keith LeannonLv2
7 Apr 2019

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

2. An inflatable bag is located in the dashboard of a car. Inacollision, the bag expands suddenly and cushions the impact ofthepassenger. The forward motion of the passenger must be stoppedinabout 30 cm of motion if contact with the hard surfaces of thecaris to be avoided.
a) For a 70-kg person with a 30-cm allowed stopping distance,showthat the magnitude of the average force is given by thefollowingexpression: F = 117 Vo^2, newtons.
Notice that the necessary stopping force increases as the squareofthe velocity of the automobile (and the passenger).
b) Assume that Vo = 70 km/h and find F.
c) If the force that you evaluated in part b) isuniformlydistributed over a 1000-cm^2 area of the passenger's body,find theapplied force per square meter. The estimated strength ofbodytissue is 500,000 Pa. NOTE: One Pa (Pascal) is a force of 1Ndivided by one area of 1 square meter.
d) Kindly, repeat the calculation of part c) with v = 100 km/h.Itis safe to say that the force per unit area just calculatedwouldprobably injure the passenger?

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two soccer players, mary and jane, begin running from approximatelythe same point at the same time. mary runs in an easterly directionat 4.7 m/s. while jane takes off in a direction of 38.4 degreesnorth of east at 8.13 m/s. the magnitude of the velocity of janerelative to mary is 5.3 m/s.

1. how long is it before they are 22.1 m apart?
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