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Unformatted text preview: DYNAMICS • Kinematics of a Particle • (12.1) Rectilinear Kinematics 1) If a = (2t) m/s 2 , where t is in seconds, calculate the particle's velocity when t = 2s. When t = 0, V o = 2m/s. v = ? One answer only. 0 m/s 2 m/s 4 m/s 6 m/s none of the above 2) If s = (4t 2 ) m, calculate the particle's acceleration at t = 2s. a = ? One answer only. 2 m/s 2 4 m/s 2 8 m/s 2 16 m/s 2 none of the above 3) If s = (3t 2 ) m, where t is in secs, calculate the particle velocities when t = 1s. v = ? One answer only. 0 m/s 3 m/s 4 m/s 6 m/s none of the above 4) The particle shown in the figure travels from A to B in 1s, it then travels from B to C in 1s. Calculate the average speed during the entire time period. v = ? One answer only. 1 m/s 3 m/s 5 m/s 2 m/s none of the above 5) cont....What is the average velocity? v = ? One answer only. 1 m/s 2 m/s 1 m/s 5 m/s none of the above 6) When t = 0 a particle is located at s = 3m and has a velocity of v = 2 m/s. If its acceleration is a = 2m/s 2 , determine its position when t = 1s. s = ? One answer only. 3 m 5 m 6 m 8 m none of the above 7) A ball is tossed downward from A with an initial speed of V A = 2m/s. If it takes 1 second to strike the ground, determine height h. h = ? One answer only. 2.9 m 4.9 m 6.9 m 9.81 m none of the above • (12.2) Graphical Solutions 1) Given the s  t graph. Calculate the particle's velocity when t=1s. v = ? One answer only. 0.5 m/s 1 m/s 2 m/s none of the above 2) Given the a  s graph. If v = 0 at s = 0, calculate the particle's speed when s = 5m. v = ? One answer only. 2.5 m/s 4 m/s 5 m/s 10 m/s 12.5 m/s none of the above 3) Given the v  s graph. Calculate the particle's acceleration when s = 2m. a = ? One answer only. 9 m/s 2 18 m/s 2 27 m/s 2 none of the above 4) Given the v  t graph. Calculate the particle's acceleration when t = 3s. a = ? One answer only. 1.67 m/s 25 m/s 210 m/s 215 m/s 2 none of the above 5) cont....Calculate the particle's position when t = 1s. When t = 0, s = 1m. s = ? One answer only. 10 m 11 m 15 m none of the above 6) Given the v  t graph. If s = 1m when t = 0, calculate the particle's position at t = 4s s = ? One answer only. 0 m 1 m 16 m 17 m none of the above 7) Given the a  t graph. If v = 6m/s when t = 0, calculate the time t needed to stop the particle. t = ? One answer only. 6 s 9 s 12 s 15 s none of the above • (12.312.5) Curvilinear motion:Rectangular Coord 1) If v = (8ti + 9t 2 j) m/s, where t is in seconds, determine the distance from the origin to the particle when t = 1s. s = ? One answer only. 4 m 5 m 3 m none of the above 2) When t = 0 a particle is at the origin. If its x component of velocity is constant, v = 4m/s, calculate the distance it travels along the x axis in t = 2s....
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This note was uploaded on 06/18/2009 for the course CE xxx taught by Professor Tuken during the Spring '09 term at Middle East Technical University.
 Spring '09
 tuken
 Structural Engineering

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