Question

Explain how a karate player can break a pile of times with a single blow of her hands and me in short

Answer 1

Because a karate player strikes the pile of tiles or slab of ice with his hand very fast. So, large momentum of his hand is reduced to zero in a short interval of time which exerts a very large force on the pile of tiles to break them.

Answer 2

By karate player time taken to strike the pile of tile is very small. As the momentum of hand of a karate player reduces to zero when his hand strike the pile of tile in very short interval of time. Therefore a large force is exerted on the pile of tile . So due to force, able to break pile of tile.