# 60-kg and a 90-kg skydiver jump from an airplane at an

## Problem 21PE Chapter 5

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition

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Problem 21PE

60-kg and a 90-kg skydiver jump from an airplane at an altitude of 6000 m, both falling in the pike position. Make some assumption on their frontal areas and calculate their terminal velocities. How long will it take for each skydiver to reach the ground (assuming the time to reach terminal velocity is small)? Assume all values are accurate to three significant digits.

Step-by-Step Solution:

Step-by-step solution Step 1 of 5 The formula for terminal velocity of falling object or person is, Here, is the density of the edium, is the mass of an object, is the acceleration due to gravity, C is the drag coef ient and is the frontal area of the object. Step 2 of 5 The velocity of diver is calculated as, The mass of the skydiver The density of the air The assumed frontal area of the skydiver The drag coefficient The terminal velocity of 60kg skydiver Step 3 of 5 The time passing until the skydiver reach the ground assuming the velocity of the skydiver is terminal velocity all along the motion

Step 4 of 5

Step 5 of 5

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