Find the four second mark on the X-axis of the graph. What comment BEST describes the two objects' motion from 0 to 4 seconds?
A) Both objects show constant acceleration.
B) Both show constant velocity but Accel 2 is about 4X faster than Accel 1.
C) Both have a constant rate of acceleration but Accel 2's rate is about 4X that of Accel 1.
D) Accel 1 has a constant rate of acceleration; Accel 2 accelerates at different rates during the trip.

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.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?