The magnitude of the net force exerted in the x direction on a 3.85-kg particle varies in time as shown in the figure below. F (N) 4 3 1 t (s) 4 1 2 3 (a) Find the impulse of the force over the 5.00-s time interval. = N:S (b) Find the final velocity the particle attains if it is originally at rest. v; = m/s (c) Find its final velocity if its original velocity is -2.10 m/s. m/s (d) Find the average force exerted on the particle for the time interval between 0 and 5.00 s. F, avg