D-R 1.5 (7 pts) Daneel is now pushing harder and finally gets the fridge and Susan sitting on top of it to move together. Daneel is applying a constant force FNR= 1000N and managed to get the fridge to move at v=4m/s in the first 2s of pushing. If Susan, whose mass is m=40kg, is not moving relative to the fridge of mass mR=100kg, what is the coefficient of friction G->R between the ground and the refrigerator? Enter your answer to 2 significant figures. G->R =