Type:
Solution Manual
Resource:
Introduction to Renewable Energy for Engineers
Edition:
1st Edition
Author(s):
Kirk D. Hagen
Chapter 1 Introduction to Renewable Energy
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1.1
Problem statement Calculate the kinetic energy of a 0.145-kg baseball with a velocity of 80 milh. Express the answer in units ofkJ. Diagram
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v = 80 mi/h
Assumptions 1. Mass and velocity are constant. Governing equations
Calculations Converting 80 milh to rnls, we have 80 milh x
1 rnls = 35.76 rnls 2.2369 milh
KE= V2 (0.145 kg)(35.76 m/s) 2 = 92.7 J = 0.0927 kJ
Solution check No errors are detected. Discussion A Major League pitcher can throw a fast ball 100 milh.
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