The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 4/t2, where t is measured in seconds. Find the velocity of the particle at times t = a, t = 1, t = 2, and t = 3. t= a V = m/s t = 1- v= m/s t = 2 v= m/s t = 3 V= m/s