In tae-kwon-do, a hand is slammed down onto a target at a speed of13m/s and comes to a stop during the4.4ms collision. Assume that during the impact the hand is independent of the arm and has a mass of 0.70 kg.
(a) What is the magnitude of the impulse on the hand from the target?
N · s
(b) What is the magnitude of the average force on the hand from the target?
N