To maintain a uniform acceleration the forward force on the truck must change Explain why

To maintain a uniform acceleration, the forward force on the truck must change because the net force acting on an object is directly proportional to its acceleration. According to Newton's second law of motion, the acceleration of an object is equal to the net force acting on it divided by its mass.

In the case of a truck, when it is initially at rest, the net force required to accelerate it forward is equal to its mass multiplied by the desired acceleration. However, as the truck starts to move and gain speed, the force of friction acting in the opposite direction (due to air resistance and the friction between the tires and the road) increases.

To counteract this increasing force of friction, the forward force on the truck must also increase. This means that the engine of the truck must provide a greater amount of force to overcome the increased resistance and maintain a uniform acceleration.

In summary, the forward force on the truck must change to maintain a uniform acceleration because it needs to compensate for the increasing force of friction as the truck gains speed