When a raw egg is dropped from a height of 4 meters, it breaks upon hitting concrete but remains intact when landing on a sponge. This difference is attributed to the time taken for the force of impact to spread out; the sponge allows for a longer duration of force application, reducing the peak force experienced by the egg. The impulse imparted to the egg is the same in both cases, but the sponge distributes the force more evenly over time. This extended time reduces the likelihood of breaking the egg, as the force is less concentrated. Overall, the mechanics of impulse and force distribution explain the varying outcomes of the egg's impact on different surfaces.