Homework Help: Science

Posted by Janise on Wednesday, January 6, 2010 at 3:39pm.

An occupant of a car has a chance of surviving a crash if the deceleration during the crash is not more than 30 g. Calculate the force on a 70 kg person deceleerating at the same rate.

Science - drwls, Wednesday, January 6, 2010 at 4:42pm
Force equals mass times acceleration. If you multiply them together, you get the force in Newtons.

acceleration = 30g = 30 * 9.8 m/s^2 = 294 m/s^2

294 x 70 = ___ N

One Newton is about a quarter pound of force.

Here's another way to look at it: The decelerating force will be 30 times the person's weight.
Science - poop, Wednesday, November 17, 2010 at 11:45am
idk
Science - Tiffany, Tuesday, October 11, 2011 at 9:22pm
20,580
Science - bbbbb, Tuesday, November 13, 2012 at 11:34pm
drwls is exactly right
Science - bbbbb, Tuesday, November 13, 2012 at 11:34pm
drwls is exactly right

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