8. (15 points) A box sits on the horizontal bed of a truck accelerating to the left as shown below. Static friction betw

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8 15 Points A Box Sits On The Horizontal Bed Of A Truck Accelerating To The Left As Shown Below Static Friction Betw 1 (53.32 KiB) Viewed 35 times

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8. (15 points) A box sits on the horizontal bed of a truck accelerating to the left as shown below. Static friction between the box and the truck keeps the box from sliding around as the truck drives. A.) The work done on the box by the static frictional force as the accelerating truck moves a distance D to the left is? a. Zero b. Positive c. Negative d. Depends on the speed of the truck B) If the coefficient of static friction is 0.88, what is the maximum acceleration possible without the box sliding on the floor of the truck? The coefficient of kinetic friction is 0.68, and the truck driver exceeds the max acceleration so that the box begins to slide. C) What acceleration must the truck driver reduce to in order to stop the box from continuing to slide backwards? ts оо