Please answer the question above #4. And then question #4 , A,b and c thank you. Show work please.

A constant force is applied to a 5 kg object. As a result, the object accelerates at 4 m/s' What is magnitude of the applied force? 2 kg of extra mass are then added to the object and the same amount of force is applied. What will be the acceleration of the object now? 4. A crate has two forces acting on it as shown below. 7N 3N B) What is the net force acting on the crate? b) If the crate has a mass of 8 kg. what is the acceleration of the crate? c) Describe the motion of the crate. Is there more than one possible motion