If the Earth stopped spinning, 6 months of daytime and 6 months of nighttime would be experienced. The side of the Earth facing the Sun will experience fiery summers, while the side facing away from the Sun would face deadly winters. If the Earth suddenly started spinning in the opposite direction, everything not fixed to the ground would be launched at 3200 km/hr eastward. This would happen because everything will still be rotating due to inertia towards the east, while the ground suddenly moves towards the west.