Car is accelerating with acceleration is 20m/s2. a box of mass m = 10kg that is placed inside the car, it is put in contact with the vertical wall of car as sho

Car is accelerating with acceleration is 20m/s2. A box of mass m = 10kg that is placed inside the car, it is put in contact with the vertical wall of car as shown. The friction coefficient between the box and the wall is = 0.6 = 0.6 10kg 20 m/s a. The acceleration of the box will be 10 m/ a. sec? b. The friction force acting on the box will be 100 N C. The contact force between the vertical wall and the box will be 100 N d. None of these