Question

A person with a black belt in karate has a fist that has a mass of 0.70 kg. Starting from rest, this fist attains a velocity of 6.9 m/s in 0.15 s. What is the magnitude of the average net force applied to the fist to achieve this level of performance?

Answer 1

F = dP/dt = 0.70(6.9-0)/0.15
= 32.2 N

Answer 2

37n