Question

why does a karate expert suddenly reduce the speed of his hand while striking a slab of ice. explain with reference to Newton's law of motion

Answer 1

あなたの答えは「KIME」です。 運動はリラックスした体で行われ、最終的に私はリジッドボディの構造について緊張しています。彼がなければ、彼はそのスピードですべての骨を破壊し、それをビットに分割するでしょう

Answer 2

A karateka strikes an ice slab as fast as possible with his or her hand. In doing so, the entire momentum of the hand is reduced to zero in very short time. The momentum of the karateka's hand is transferred to the ice. This is what breaks the ice and causes the hand to stop. However, if the ice does not break, it will return some of the momentum causing the hand to reverse direction and/or break.