Q1. In a medical X-ray tube, electrons are accelerated to a velocity of and then slammed into a tungsten target. As they stop, electrons' rapid acceleration produces X rays.

If the time for an electron to stop is on the order of 10^-9 seconds, about how far does it move while stopping?

Q2. A stockroom worker pushes a box with a mass 11.2kg on a horizontal surface with a constant speed of 3.50m/s. coefficient of kinetic friction between the box and the surface is 0.20. What is the horizontal force must the worker apply to maintain motion? If the force calculate in part a id removed, how far does the box slide before coming to rest?