Force and Motion (Newton's Second Law): The relation between the weight of hanging mass Wa and the acceleration, a, of the system is shown in Figure beside. The total mass of the system is, in kg: A. 0.20 B. 0.15 C. 0.35 D. 0.10 E. 0.25 A. 1.2 B. 0.4 C. 2.0 D. 0.7 E. 0.5 Q9: Assume the cart mass is 0.15 kg. At the instant a = 4m/s, the added mass (m) in, kg, is: ma me W (N) OMA 2.5- 2.0- 1.5- 1.0- 0.5-