The present investigation explores the impact dynamics of a spherical projectile on a granular bed, utilizing the discrete element method (DEM) in computer simulations and subsequently verifying the results with laboratory-based experiments. By employing this integrated approach, a thorough comprehension of behavior of the granular bed and the intricate dynamics governing projectile penetration is attained, offering significant insights into the underlying physical mechanisms during low-velocity impact. Furthermore, the predicted penetration depth of the projectile has been successfully validated through experiments. Gaining a thorough understanding of the dynamics at the particle level within impact phenomena occurring in granular media yields essential insights that propel the progress of research and applications across interconnected domains.