A2L Item 055

  • 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 person throws a ball straight up in the air. The ball rises to a maximum height and falls back down so that the person catches it. What forces are being exerted on the ball when it is half way to the maximum height? Ignore air resistance.

  1. The gravitational force only.
  2. The force of the person’s hand only.
  3. Both the gravitational force and the force of the person’s hand.
  4. The gravitational force, the force of the person’s hand, and a third force.
  5. None of the above
  6. Cannot be determined