Question 3 In the following situations what is the magnitude and the direction of the acceleration of following object affected by external forces F1 = 10N and F2 = 15 N and consider the kinetic friction of f = 5 N : F1 M = 5kg F2 O a = 4 m/s2 to the left O a = 4 m/s2 to the right O a = 5 m/s2 to the right O a = 5 m/s2 to the left