A hockey player skates across a pond with constant velocity v and hits a puck straight ahead toward the goal. We can assume there is no friction.
After the puck is hit, what is the velocity of the center of mass of the hockey player-puck system?
Choose 1
It is equal to the velocity of the hockey puck.
It is equal to half the velocity of the hockey player.
C
It is equal to the original velocity of the hockey player.
It is equal to the new velocity of the hockey player,

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.