4) The displacement of a particle moving in a straight line is given by the equation...

Transcribed Image Text:

4) The displacement of a particle moving in a straight line is given by the equation s(t) = 2t - 12.5t - 20t - 4, t≥ 0, where s(t) is the position in meters, and t is the time in seconds. a) Find equations to describe the particle's velocity and acceleration. b) Determine the particle's velocity and acceleration at 3 seconds. c) At what time(s) will the particle be at rest? d) During what interval of time is the particle moving in the negative direction? [2] [2] [3] [2] 4) The displacement of a particle moving in a straight line is given by the equation s(t) = 2t - 12.5t - 20t - 4, t≥ 0, where s(t) is the position in meters, and t is the time in seconds. a) Find equations to describe the particle's velocity and acceleration. b) Determine the particle's velocity and acceleration at 3 seconds. c) At what time(s) will the particle be at rest? d) During what interval of time is the particle moving in the negative direction? [2] [2] [3] [2]