A2L Item 024

  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.
  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.
  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.
  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.
  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.
  • warning: Parameter 1 to theme_field() expected to be a reference, value given in /home/ibeatty/clickercentral.net/includes/theme.inc on line 171.

At the scene of an accident the car causing the crash left skid marks of a length D. The accident reconstruction team did a test and found that a police cruiser traveling at the speed limit produces skid marks of length d < D. Which of the following statements is valid?

  1. Since D > d the car must have been traveling over the speed limit.
  2. One cannot conclude that the car was speeding because the test failed to take reaction time into account.
  3. One cannot conclude that the car was speeding because the test failed to take the mass of the car into account.
  4. One cannot conclude that the car was speeding because the test failed to take into account possible differences in the coefficient of friction for different tires.
  5. Two of the above statements are valid.
  6. None of the above statements is valid.
  7. It cannot be determined if any of the statements is valid.