I-ii^6 - V - vi - iv - V-I The progression above includes which of the following harmonic features?
A) Inconclusive cadence
B) Deceptive progression
C) Retrogression
D) Picardy third​

i think the answer is b.) them maintain their relationships.

hope it

ek = (m.v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) v2/2

ek = (200 + 250) 2,32/2 = 450*5,29/2 = 1190,25 j

by: nicholas dooley