A massive block is being pulled along a horizontal frictionless surface by a constant horizontal force. The block must be . View Available Hint(s) A massive block is being pulled along a horizontal frictionless surface by a constant horizontal force. The block must be . continuously changing direction moving at constant velocity moving with a constant nonzero acceleration moving with continuously increasing acceleration Part E Two forces, of magnitude 4N and 10N, are applied to an object. The relative direction of the forces is unknown. The net force acting on the object . Check all that apply. View Available Hint(s) Check all that apply. cannot have a magnitude equal to 5N cannot have a magnitude equal to 10N cannot have the same direction as the force with magnitude 10N must have a magnitude greater than 10N