A person with a mass of 60kg is driving her car at a velocity of 30 m/s. The car is involved in a small collision and the airbag is deployed. The airbag provides a stopping force of 1200 N. The person’s final velocity is 0m/s. How long does it take for the person to be stopped by the airbag?

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)