If two objects interact, the forces they impart on each other will be equal in
and opposite in .
a. Force & interaction. b. Magnitude & direction
c. interaction & force

What are similarities and differences between refraction, reflection, diffraction and absorption?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

What does si stand for,when referring to a system of measurement