Seat belts and air bags: Putting it all together
Car safety The National Transportation Safety Bureau indicates that a person in a car crash has a reasonable chance of survival if his or her acceleration is less than 300 m/s2. (a) What magnitude force would cause this acceleration in such a collision? (b) What stopping distance is needed if the initial speed before the collision is 20 m/s (72 km/h or 45 mi/h)? (c) Indicate any assumptions you made.
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