solns1A

# solns1A - sin a = 1948 km = distance traveled by enemy...

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EXAM 1A SOLUTIONS – PHYS 15200 Page 1 of 1 Part I. Multiple Choice Questions [2 pts each] 1) C 2) E 3) B 4) E 5) C Part II. Word Problems [30 pts each] 1) (A) Set v ( t ) = 0 and solve for t t = 4 s Plug into x ( t ) = 6 t 2 t 3 x = 32 m = maximum (B) Plug 3 s into F Net = ma = m (12 6 t ) F Net = 12 N 2) (A) sin α 1200 = sin120 ° 2000 = 31.3 ° + 30 ° = 61.3 ° N of W (B) β = 180 ° 120 ° = 28.7 ° a sin = 1800
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Unformatted text preview: sin a = 1948 km = distance traveled by enemy aircraft So time = 1948 km/(1200 km/h) = 1.62 h 3) 4-kg block: T − f 1 = m 1 a f 1 = 0.22(39.24 N) 6-kg block: 40cos37 ° − T − f 2 = m 2 a f 2 = 0.22(58.86 N − 40sin37 ° ) (A) Solve for a a = 1.57 m/s 2 (B) Solve for T T = 14.9 N 1200 km/h 2000 km/h 120 °...
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## This note was uploaded on 03/03/2012 for the course PHYS 152 taught by Professor Button during the Fall '08 term at IUPUI.

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