A crate is sitting in the center of a flatbed truck. As the truck accelerates to the east, the crate moves with it, not sliding on the bed of the truck. In what direction is the friction force exerted by the bed of the truck on the crate? 1. To the south 2. There is no friction force, because the crate isn’t sliding 3. To the west 4. To the east 5. To the north