Question

why does karate expert suddenly reduce the speed of his hand while striking a dlab of ice? explain with refrance to Newtons law of motion​

Answer 1

A karate expert suddenly reduce the speed of his hand while striking a slab of ice because by doing so he tries to decay the process and from the Newton's second law.

Answer 2

As we know that *every action has a equal and opposite reaction* so, when the Karate expert hit the dlab of ice he will suffer from a force so he reduce his speed.