Home > Kinematics of a Particle > True or False >
     
Kinematics of a Particle
True or False

1 .       Dynamics is concerned with bodies that only have accelerated motion. 

 
 


2 .       A particle has a mass but negligible size and shape. 

 
 


3 .       Some objects can be considered as particles provided motion of the body is characterized by motion of its mass center and any rotation of the body can be neglected. 

 
 


4 .       The distance the particle travels is a vector quantity. 

 
 


5 .       The average velocity of a particle is different than its average speed. 

 
 


6 .       If the acceleration is zero, the particle cannot move. 

 
 


7 .       A position vector r acting along a straight axis s, can never change direction. 

 
 


8 .       A position vector r acting along a straight axis s can change its magnitude and sense of direction. 

 
 


9 .       Kinematics is concerned with the forces that cause the motion. 

 
 


10 .       Speed represents the magnitude of velocity. 

 
 


11 .       Average speed represents the total distance traveled divided by the total time. 

 
 


12 .       A particle can have an acceleration and yet have zero velocity. 

 
 


13 .       The equation v = v0 + act can be used when a = (3 t) m/s2

 
 


14 .       For rectilinear kinematics, the direction of v is defined by its algebraic sign. 

 
 


15 .       For rectilinear kinematics, the positive direction of the coordinate axis can be directed to the left. 

 
 


16 .       If v = (4 t3) m/s, it is necessary to know the position of the particle at a given instant in order to determine the position of the particle at another instant. 

 
 






Copyright © 1995-2010, Pearson Education, Inc., publishing as Pearson Prentice Hall Legal and Privacy Terms