$2$D Explosion Problem: Finding a "Safe Distance"

Scenario: On a dark and foggy night a burglar placed a bomb in a bank that was located on top of a small hill $($see side view at left$).$ After the explosion, the police showed up and found several objects blown away from the building but not the missing $158$ kg safe.

Assume:

No other objects or pieces of the building flew away in the explosion.

All objects flew away from the building horizontally, fell the same vertical height, and therefore stayed in the air for the same exact amount of time $=2\mathrm{.}5sec.$

a$)$ Complete the givens table below

b$)$ Complete the $2$D momentum vector diagram for each object in the explosion. Provided is a top$-$down diagram of the bank, with the chair flying off at $42N$ of E $.$

Try to make the length of the vectors indicate the relative sizes of the momentum values.

$-$Label each vector as shown in the chair example.

$-$If you have room, you may choose to include the values for the $x-$ and $y-$components on your diagram.

c$)$ Determine the final displacement $($d and theta$)$ of the missing safe.