On a windy winter's day, the actual air temperature is – 5°C and the wind speed is
15 kilometers per hour. What would the wind-
chill factor make the temperature feel like to a
person outdoors?
F 1.7°C
G -5°C
H -10.6°C
J-16.7°C

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?