ME212 s05 quiz1 - ME21205 QU|Z1 Name A x w A...

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Unformatted text preview: ME21205 » ' @ 4/4/05 QU|Z1 Name.__ A _- x, w A fi—"—_— PROBLEM 1: The velocity of a particle which moves along the x—axis is given by v = 2 — 4t + 5t3/2 where t is in \./ seconds and v is in meters per second. ‘ ‘ . . . . — ‘- / Write the units assomated With each coefficient on the right side: 2 “Vs '/ , —4 ms‘ / 2 Evaluate the position x, velocity v, and acceleration a when t= 3 s. The particle is at the position x0 = 3m when t= 0. 3 m m "E 3 ‘ 2 v8) : 2’s“ -(“/§T){35)+(Sms 2Y3; “(33: “#525 + L385I : 2%- laa+ 56L;- .5 :(w—r Izn’m/s‘ was l5.677m/5\/ WY “WWW“...flwtumnaw-r ”W ; xza):z+~2+l+2l2+?> S m“ w ‘ “5% $253573 : (2§\13X§-(2®(fi¥3+(2ms Y m :(e , I? + 3/70 %M "at W _,’_~—--' PROBLEM 2: Linear Impulse is equal to the change in the linear momentum of a particle. Calculate the linear impulse using the equation below. Express your answer in lbf' sec. Show all units and conversions. Linear Impulse = mv2 — mv1 Given: m = 2 lbm, v2 = 5 ft/s, v1: 3 ft/s. mvz/ my} : (Zlbmd(§£s:_p> .. (ZlEh-D(g £5.) \/ 7 (0'6? 5’“§>( g§5> ’ (0-62 slum 3 “EM .7 Olga lei—é? ($3.3 / [0,52 113%?) (332;) : (3‘1 — km M‘s fl It? Mac-Sea! ...
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