Another look at the projectile motion

This paper discusses the traditional problem of the projectile motion by alternative approaches. The usual assumption of neglecting air resistance is considered. We verify that the vector method based on the whole position vector gives significant pedagogical advantage when compared with the decomposition method alone. We also show that the approaches stressing the concept of linear momentum and the conservation of energy play an essential role. The methodology based on the notion of first integrals of motion gives an overview on this topic, showing the interplay andcomplementarity of the different descriptions.