A2L Item 160

  • 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.

A cart of mass 2m collides and sticks to a cart of mass m that is initially at rest. The combination of the two then moves together. Which of the following principles would be the most efficient way to find the final speed of the combination?

  1. The Work/Energy Theorem
  2. Newton’s Laws and the basic equations of motion
  3. Conservation of Energy
  4. Conservation of Momentum
  5. Conservation of Angular Momentum
  6. A different principle entirely.
  7. Two (or more) of them would be equally efficient.
  8. Need more information.