The vibration caused by p waves is a volume changes, alternatimg from compression to expansión in the direction that the waves is traveling.
Honestly i don’t know but I’d just guess if I were you
Average acceleration = (change in speed) / (time for the change) .
Average acceleration = (13.2 - 6) / (6.32) = 7.2 / 6.32 = about <em>1.139... m/s²</em> .
