A bag of groceries is on the back seat of your car as you st

A bag of groceries is on the back seat of your car as you stop for a stop light. The bag does not slide. Identify all the forces acting on the

I guess you just need the answer for the second part

THe weight of the bag is also one of the forces that are acting on the bag.

THe other forces that you mentioned will be normal force from the seat and static friction as bag doesn\'t move.