1. Shown below is a velocity vs time graph for a 4kg object moving along the x-axis. Find the net force (magnitude and direction) on the object at each of these times. You should keep 2 significant figures in calcualtions. [ 15 points - 3 points each ] a. t = 1 sec b. t = 2 sec c. t = 3 sec d. t = 5 sec e. t = 6 sec Velocity, v (m/'s) 0 2 3 4 5 6 Time, t