Module 9: Kinematics of Particles

Question 1

in _____________________________, acceleration of the particle is zero for every value of t. Thus, velocity is
constant.

Answer 1

uniform rectilinear motion

Question 2

particle moving in a straight line

Answer 2

rectilinear motion

Question 3

kinematics of a particle is characterized by specifying the particle’s position, velocity and acceleration at any given instant

Answer 3

rectilinear motion

Question 4

it defines the transverse direction in which P would move if 𝜃 were increased and r were kept constant

Answer 4

transverse coordinate

Question 5

it refers to the rate of change of velocity

Answer 5

acceleration

Question 6

if the speed of the particle increases, points in the direction of the motion

Answer 6

positive tangential acceleration

Question 7

it is a uniform horizontal motion

Answer 7

projectile motion

Question 8

The acceleration of a particle will be __________ only if both its components are zero.

Answer 8

zero

Question 9

point on a path to specify the location of a particle at any given instant

Answer 9

position

Question 10

there is always a _____________ covered whenever there’s a motion

Answer 10

distance

Question 11

particle moves along a curve

Answer 11

curvilinear motion

Question 12

The acceleration of a particle moving with constant speed along a curve will not be zero unless the particle happens to pass through a ____________________ of the curve or unless the curve is a _____________

Answer 12

point of inflection, straight line

Question 13

it is the rate of change of displacement

Answer 13

velocity

Question 14

it is the study of the geometry of motion

Answer 14

kinematics

Question 15

the magnitude of s measured in meters (ft) is the distance and the sign is arbitrary (left to right, down to up)

Answer 15

position

Question 16

it is length of the path travelled by a particle from an initial to final position

Answer 16

distance

Question 17

it relates the displacement, velocity, acceleration, and time of a body’s motion, without reference to the cause of the motion

Answer 17

kinematics

Question 18

it predicts the motion caused by given forces or determine the forces required to produce a given motion

Answer 18

kinetics

Question 19

if the speed of the particle decreases, points against the direction of the motion

Answer 19

negative tangential acceleration

Question 20

it refers to the rate of change in position

Answer 20

velocity

Question 21

it is the rate of change of distance

Answer 21

speed

Question 22

it is a uniformly accelerated vertical motion

Answer 22

projectile motion

Question 23

it is where the radius of curvature is infinite

Answer 23

point of inflection of the curve

Question 24

in this motion, position, velocity, and acceleration serves as vectors

Answer 24

curvilinear motion

Question 25

it is the shortest distance between the initial and final position of the particle

Answer 25

displacement

Question 26

it is equal to the square of the speed divided by the radius of curvature of the path

Answer 26

normal acceleration

Question 27

this becomes zero if the body comes back to its initial position

Answer 27

displacement

Question 28

it is always directed toward the center of curvature of the path

Answer 28

normal acceleration

Question 29

it refers to the change in speed of the particle

Answer 29

tangential acceleration

Question 30

in curvilinear motion, direction is tangent to the?

Answer 30

path and hodograph

Question 31

it defines the radial direction in which P would move if r were increased and 𝜃 were kept constant

Answer 31

radial coordinate

Question 32

it is the change in position (Δs)

Answer 32

displacement

Question 33

it is the study of the relation between the forces acting on a body, the mass of the body, and the motion of the body

Answer 33

kinetics