What is the momentum of a 589-nm yellow photon?

You arrive at a home to find a young man deceased in his bedroom at his parents home. His parents state he came home from work at about 5pm the night before then went out some clubs and came home in the early morning. In his pants you find 700 in cash and an atm receipt from that night time stamped 7:30 pm withdrawing $40.00 dollars from his bank. What various scenarios can explain findings ? Detail at least two possible scenarios for what might have happened include details including 1. Where he might have been 2. Who he might have been with 3. What activities he might have been engaged in  4.how the evidence you have found might support/ negate your theory

There are two parts to this question. I need to know the km/s and the hr. Thank you!

There is one part to this question. I need to know the m/s. Thank you!