A runner runs 480 m towards north on a straight track in 120 s and then walks back the same distance in 300 s. (Note: velocity and speed are two different physical quantities) (a) What is the average velocity for the first part of the motion?

(b) What is the average velocity for the second part (walking back) of the motion?

(c) Calculate his average velocity for the entire motion.

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?