Recent content by Sam Dater

  1. S

    As part of a safety investigation, two 1600 kg cars traveling at 22 m/s are crashed?

    As part of a safety investigation, two 1600 kg cars traveling at 22 m/s are crashed into different barriers. Find the average forces exerted on (a) the car that hits a line of water barrels and takes 1.4 s to stop, and (b) the car that hits a concrete barrier and takes 0.1 s to stop.
  2. S

    A 12 kg loudspeaker is suspended 3.0 m below the ceiling by two cables that are

    each 40 degrees from vertical.? What is the tension in the cables?
  3. S

    In a head-on collision, a car stops in 0.14 s from a speed of 29 m/s.?

    The driver has a mass of 82 kg, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?
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