Table of Contents
Table of Contents
"Exercises of Kinematics, Dynamics and Statics"
INTRODUCTION
KINEMATICS
STATIC AND DYNAMIC
"Exercises of Kinematics, Dynamics and Statics"
"Exercises of Kinematics, Dynamics and Statics"
SIMONE MALACRIDA
In this book, exercises are carried out regarding the following physics topics:
kinematics
static and dynamic forces
conservation laws
shock theory
Simone Malacrida (1977)
Engineer and writer, has worked on research, finance, energy policy and industrial plants.
ANALYTICAL INDEX
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INTRODUCTION
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I – KINEMATICS
Exercise 1
Exercise 2
Exercise 3
Exercise 4
Exercise 5
Exercise 6
Exercise 7
Exercise 8
Exercise 9
Exercise 10
Exercise 11
Exercise 12
Exercise 13
Exercise 14
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II – STATIC AND DYNAMIC
Exercise 1
Exercise 2
Exercise 3
Exercise 4
Exercise 5
Exercise 6
Exercise 7
Exercise 8
Exercise 9
Exercise 10
Exercise 11
Exercise 12
Exercise 13
Exercise 14
Exercise 15
Exercise 16
Exercise 17
Exercise 18
Exercise 19
Exercise 20
Exercise 21
INTRODUCTION
INTRODUCTION
In this workbook some exemplifying problems about mechanics in all its forms, from kinematics to statics up to dynamics are carried out.
These disciplines are generally addressed in the study of physics in the third year of scientific high schools and constitute the first approach to this scientific subject.
Precisely for the reason that these exercises are aimed at the high school level, there will be no concepts of mathematical analysis and resolution methods typically of a university nature.
I
KINEMATICS
KINEMATICS
Exercise 1
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A vehicle travels for a certain time T at a speed of 40 km/h, covering a given distance d.
After that, it travels the same distance but at 80 km/h.
Find the average speed.
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The distance traveled is equal to 2d.
The total time is given by:
So the average speed is:
Exercise 2
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An object is thrown upwards from the ground with an initial speed of 12 m/s.
How long does it take to reach the highest point?
What is the height of the highest point?
How long after the launch does it fall to the ground?
How fast does it hit the ground?
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We neglect friction and apply the laws of kinematics.
We have:
The time to reach the highest point is found when v(t)=0 i.e.:
The distance covered in this time coincides with the maximum height reached:
The time after which the object returns to the ground is simply twice the time to reach the highest point since, in the absence of friction, the forward path is identical to the return path, except considering the appropriate signs for the vectors space and speed:
From which:
Impressum
Verlag: BookRix GmbH & Co. KG
Tag der Veröffentlichung: 24.04.2023
ISBN: 978-3-7554-4023-9
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