Solutions for Exercise Problems - Acoustics | PHYS 170, Assignments of Physics

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Exercises 4. If the speed limit is posted as 55 mi/h, express this in km/h and in m/s (1 mi = 1.61 km) ( an = (FL kwh SS oe ( et kn f jooom \~ | ke , twek S ur Powe I Vem J Goa J% bos ) STON CI 1000} mS (boifea) ¢ 5. A car accelerates from rest to 50 mi/h in 12 s. Calculate its average acceleration in m/s’. Compare this to the acceleration of an object in free fall (1 mi/h = 0.447 m/s). 7 OV a ' a-% Jails Stet by converting ? wal fy to msg Sg OMY aly t So fT ) = 224m), Imedude ad dife chen, here tey get shepy ¢ der? they are ot Pradiay fio magus? ade af tte acceleaton = — + — >. BV _ Vewiar™ Vininat — 22M w)y DS mls LO a a= Gp = “mp = Blk 7 m/e)