The picture below shows a person swinging a yo-yo in a circle. Which vector shows the velocity of the yo-yo at this moment? A. B
B. A
C. C
D. D

=force × distance a. work b. velocity c. pressure d. momentum

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two