Step solution.

The velocity, v, in m/s, of a particle t seconds after it passes through the origin is given by the expression v = tecos cos (1-1) - 2 , 120. (a) Show that the acceleration, a , of the particle at time t is given by a = ecos(1-) [t sin(1 -t) +1] (b) Find the first two positive values of t when the acceleration is zero. (c) Find the distance travelled by the particle in the first 6 seconds