The free-body diagram for a car coasting to the right and slowing down, neglecting air resistance, includes three main forces.
Three primary forces are depicted in the free-body diagram of a car coasting to the right and slowing down, ignoring air resistance. Deceleration is caused by the weight (W) acting downward, the normal force (N) acting upward and having the same magnitude as the weight, and the frictional force (f) acting to the left.
The three main forces at work—gravity, the supporting surface, and friction that prevents the car from moving—are depicted graphically in this representation. It offers a succinct representation of the factors influencing the dynamics of the car in the specified situation.