Answered: A person with a black belt in karate…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 43P: What is the mass deep breath of air having a volume of 2.00 L? Discuss this effect taking such a...

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Write an explanation or narration about the given problem why the problem got these answers shown in the photos. Narrate the solution in the given picture below. The narration must include the following parts: 1. Dissect the problem by explaining the illustration 2. Identify the given variables and the required ones 3. Explain the solution 4. Double check the solution by explaining why the values makes sense or using another way to verify the answer. Problem: (The answer to this question is in the given picture) 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 8.0 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?

Civen dat a:
mass oL fist (m) =
initial
velouity lu)
fined velaity
0.70
o mls
8mls
velaisyin
time taken U
0.15s

wing
equation of motion
4 + at
ニ
8 ニ
o taxo. s
a = 8
O-IS
= 53. 33 m/s?
Now, from Newten's Jaw
f = ma
where,
f is force
= 0.70 X53.33
34.33 N(required force).

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