You are standing at $x=9\mathrm{.}0km.$ Lightning bolt $1$ at $x=0km$ and lightning bolt $2$ at $x=-12\mathrm{.}0km.$ Both flashes reach your eye at the same time. Your assistant is standing at $x=3\mathrm{.}0km.$

Part A

Does your assistant see the flashes at the same time?

yes

no

Request Answer