Suppose that the sound level of a conversation is initially at an angry 71 db and then drops to a soothing 54 db. assuming that the frequency of the sound is 504 hz, determine the (a) initial and (b) final sound intensities and the (c) initial and (d) final sound wave amplitudes. assume the speed of sound is 343 m/s and the air density is 1.21 kg/m3.

Bag of bolts weight 29.4n

Initial velocity,  u = 4.9 m/sfinal velocity = v m/sinitial height,  h₁ =  245 m    final height, h₂ = 0a = -9.8  m/s²time taken = t secondss = ut + 0.5at²⇒  (h₂-h₁) = ut + 0.5at²⇒  0-245 = 4.9t + 0.5×(-9.8)×t²⇒ -245 = 4.9t - 4.9t²⇒ 4.9t² -4.9t -245 =0solving it, we get   t = 7.59sv  = u +  at = 4.9 -9.8×7.59 = 4.9 - 74.38 = -69.48 m/svelocity is  69.48 m/s downward

Inelastic is the answer your looking for.