If F=4 N, e = 60, m=1 kg and the surface is frictioniess, the acceleration (in m/s) of the block shown in the figure is: . 3 O b. 2 C. zero d. 5 If the resultant force exerted on an object is zero, then the object a. must be at rest O b. either at rest or moving with consent velocity O c. must be moving with constant velocity O d. either at rest or moving with consent speed