You are standing at $x=9\mathrm{.}0km$ and your assistant is standing at $x=3\mathrm{.}0km.$ Lightning bolt $1$ strikes at $x=0km$ and lightning bolt $2$ strikes at $x=12\mathrm{.}0km.$ You see the flash from bolt $2$ at $t=20s$ and the flash from bolt $1$ at $t=60s.$

Part A

According to your assistant, were the lightning strikes simultaneous?

View Available Hint$($s$)$

Yes, the lightning strikes simultaneous.

No$,$ the lightning bolt $1$ strikes first.

No$,$ the lightning bolt $2$ strikes first.