동역학 11판 솔루션 EngineeringMechanics Dynamics11thed Hibbeler

Table of Contents
Chapter 12 Chapter 13 Chapter 14 Chapter 15 Chapter 16 Chapter 17 Chapter 18 Chapter 19 Chapter 20 Chapter 21 Chapter 22 1 145 242 302 396 504 591 632 666 714 786
Engineering Mechanics - Dynamics
Chapter 12
Problem 12-1 A truck traveling along a straight road at speed v1, increases its speed to v2 in time t. If its acceleration is constant, determine the distance traveled. Given: v1 = 20 Solution: a = v2 ? v1 t 1 2 at 2 a = 1.852 m s
2
km hr
v2 = 120
km hr
t = 15 s
d = v1 t +
d = 291.67 m
Problem 12-2 A car starts from rest and reaches a speed v after traveling a distance d along a straight road. Determine its constant acceleration and the time of travel. Given: Solution: v = 2a d
2
v = 80
ft s
2
d = 500 ft
v a = 2d t = v a
a = 6.4
ft s
2
v = at
t = 12.5 s
Problem 12-3 A baseball is thrown downward from…