Me with thses questions 3 sentences i beg you! a body is placed on a rough inclined plane. why does the frictional force decrease with the increase of angle of inclination? when a moving bus stops suddenly, the passengers fall forward. why does this happen? the lesser the mass, the greater the acceleration for the given value of force. why does this happen?

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.