3. Alice observes lightning strike the ground in two places. which we'll label as l and 2. The lightning strikes are only separated horizontally and occur simultaneously in Alices frame. In Alice's frame. let the spacetime coordinates of light ning strike 1 be :1: 1 : yl : zi : O and t1 : 0 with the .1'axis pointing horizontally to the right. a) If Alice observes lightning strike 2 as 100 m to the right of strike 1 what are the spacetime coordinates of strike 2 in Alice's frame? b) If Bob travels to the right with speed 0.7(- relative to Alice what are the spacetime coordinates for the lighting strikes in Bob's frame? Are the events simultaneous in Bob's frame? If not. which strike does Bob see rst? c) What is the distance between lightning strikes in Bob's frame? (1) Now suppose Bob sees a third lightning strike. In Bob's frame. strike 3 happens at, the same horizontal location as strike 2. but it. happens 0.8 us later. Find the spacetime coordinates for strike 3 in Alice's frame. In Alice's frame, do strikes 2 and 3 happen at the same location