= = 3960 ⋅ 0.1399 ≈ 554 s rθ ω = 1 rev = 2π = π ≈ 0.09 rad/sec = r miles 30 feet 108. sec 70 sec 35 miles 103. ω = = 30 feet ⋅ π rad = 6π ft ≈ 2.69 = = = v rω 1 rev/day 2π radians/day feet/sec π radians/hr = r 35 sec 7 sec 12 70 miles = v rω = r = ⋅ 4 20π 109. = = 3429.5 ⋅ π ≈ 898 v rω ft 104. miles/hr = 4 feet; r ω = = 10 rev/min 20π radians/min 12 min ω = 1 rev/day = 2π radians/day = = radians/hr 80π π 12 80π ft 1 mi 60 min = = 3033.5 ⋅ π ≈ 794 v rω = ⋅ ⋅ min 5280 ft hr miles/hr 12 ≈ 2.86 mi/hr
s = rθ = 3960 ⋅ 0.1399 ≈ 554 miles 108. r = 30 feet ω = 1 rev = 2π = π ≈ 0.09 rad/sec 103. r = miles ω = 1 rev/day = 2π radians/day = π 12 radians/hr 70 sec 70 sec 35 v = rω = 30 feet ⋅ π rad = 6π ft ≈ 2.69 feet/sec 35 sec 7 sec 104. v = rω = 3429.5 ⋅ π ≈ 898 miles/hr 12 r = miles 109. r = 4 feet; v = rω = 4 ⋅ 20π ft ω = 10 rev/min = 20π radians/min ω = 1 rev/day = 2π radians/day = π radians/hr = 80π min 12 80π ft 1 mi 60 min v = rω = 3033.5 ⋅ π ≈ 794 miles/hr = min ⋅ ⋅ 5280 ft hr 12 ≈ 2.86 mi/hr
62514-0132318806_ISM_02-1.docx