Two systems K and K synchronize their clocks at t t 0 when their origins are aligned as system Kpasses by system K along the x axis at relative speed0.8c. At time t 3 ns, Frank (in system K) shoots aproton gun having proton speeds of 0.98c along his xaxis. The protons leave the gun at x 1 m and arriveat a target 120 m away. Determine the event coordinates(x, t) of the gun fi ring and of the protons arrivingas measured by observers in both systems K and K.
NEWTON’S FIRST LAW ● the most profound change in understanding the universe up to his time ● developed in the 1660s when the plague was sweeping thru Europe - again ● not published for almost 20 years ● perhaps a true law of nature ● objects at rest stay at rest ● objects in motion stay in motion, unless acted on by an outside force ● the first was common sense ● the 2nd was revolutionary ● the natural state of anything… what it will do if you leave it alone… is uniform motion ○ constant speed in a straight line ● moving uniformly feels like being at rest ● you can’t feel motion, only changes in motion ● there is no such thing as centrifugal force = term comes from misunderstanding the first law