8. A particle is moving along a straight line such that its position is defined by s = (10r + 20) mm, where t is in seconds. Determine (a) the displacement of the particle during the time interval...

Extracted text: 8. A particle is moving along a straight line such that its position is defined by s = (10r + 20) mm, where t is in seconds. Determine (a) the displacement of the particle during the time interval from t l1s to t 5 s, (b) the average velocity of the particle during this time interval, and (c) the acceleration when t 1 s. Ans: As = 240 mm; vavg = 60 mm/s; a = 20 mm/s? 9. The acceleration of a particle as it moves along a straight line is given by a = (2t - 1) m/s, where t is in