a) A force F applied to an object of mass m₁ produces an acceleration of 9.53 m/s². The same force applied to a second object of mass m₂ produces an acceleration of 3.47 m/s². What is the value of the ratio m₁/m₂? b)If m₁ and m₂ are combined into one object, find its acceleration under the action of the force F.