Answers for Problems - Acoustics | PHYS 170, Assignments of Physics

Download Answers for Problems - Acoustics | PHYS 170 and more Assignments Physics in PDF only on Docsity!

8. Calculate an average speed in each of the following cases: (a) An object moves a distance of 25 m in 3 s. ox ~ - oH ax = 25 m Vo aé aks 35 25 ym for, ~ Vo me Bd mg (b) A train travels 2 km, the first at an average speed of 50 km/h and the second at an average speed of 100 km/h. (Note: The average speed is not 75 km/h.) O Xeor dle acer 3 Kee = 7 vt . Voor 6 ora, A ie eG? mot bad Fhly tipet Ter ‘ , Otte = At, 4 &ty ) fxd Gt, Fle Hae Fe trevel the $8 dem Wye Zz we seke/ ay, # | bm Of =? SeWwe For Bt, & pleg in ws at, = of Nem wT “SO Em) x = 602% Gad ot, the fee to travel the 24 kw _ 6% } ? V5 ~ a V2 = 100 km fy BX2= | kw Ge f Seve fr Ot, & pleg ia #5 bby? One > tke Vy foe kmpy ~ G.ot kh Bd fd Var tee thet OXter g abige dee Baer Oba = O62 tool hs GOs = OkPT 2 ke 01 : ,? Vor = “Se = oes TEL? Eeh ) ‘ ta ms Ubi ke ( a JC Bloon D HUGS made 7