Kinematics

Question 1

study of motion of particles and bodies, without taking into account the factors that cause motion

Answer 1

kinematics

Question 2

– deals with motion of objects and forces that change this motion

Answer 2

mechanics

Question 3

study of motion, along with the factors that cause motion; calculations involve masses and forces

Answer 3

dynamics

Question 4

motion along a straight path

Answer 4

rectilinear motion/translational motion

Question 5

change of position over time

Answer 5

motion

Question 6

any measurement of position, distance or speed must be made with respect to a reference frame

Answer 6

frame of reference

Question 7

measured along the actual path

Answer 7

distance

Question 8

– how far the object is from its starting point, regardless of how it got there

Answer 8

displacement

Question 9

formula of displacement

Answer 9

Δx= Xf- Xo

Question 10

how far an object travels in a given time interval; it is a scalar quantity

Answer 10

speed

Question 11

formula of speed

Answer 11

v=d/t

Question 12

includes directional information, a vector quantity

Answer 12

velocity

Question 13

velocity formula

Answer 13

average velocity=displacement/(time elapsed)

Question 14

average velocity over a very, very short (infinitesimal) time interval

Answer 14

instataneous velocity

Question 15

 Can be determined by measuring the slope of the line that is tangent to that point on the position-versus-time graph

Answer 15

instantaneous velocity

Question 16

changing velocity (non-uniform)

Answer 16

acceleration

Question 17

formula for acceleration

Answer 17

Vf-Vi/t

Question 18

describe motion
velocity +
acceleration -

Answer 18

slowing down in + direction

Question 19

describe motion
velocity -
acceleration -

Answer 19

speeding up in - direction

Question 20

describe motion
velocity +
acceleration -

Answer 20

slowing down in + direction

Question 21

describe motion
velocity -
acceleration +

Answer 21

slowing down in - direction

Question 22

– a body is said to be in this kind of motion if it travels equal distances in equal intervals of time

Answer 22

uniform motion

Question 23

in uniform motion:

 Velocity is ____; acceleration is ___

Answer 23

constant
zero

Question 24

 Examples include train moving at steady speed, hands of clock motion, motion of the blades of an electric fan

Answer 24

uniform motion

Question 25

equation for uniform motion

Answer 25

x = vt
x = xo + vt

Question 26

motion of an object where acceleration is constant

Answer 26

uniformly accelerated motion

Question 27

 examples include a ball rolling down an inclined plane, motion of a freely falling body

Answer 27

uniformly accelerated motion

Question 28

formula for finding velocity at constant acceleraton

Answer 28

Vf= Vo+at

Question 29

formula for finding displacement to changing velocities

Answer 29

Δx=(vf-vo)/2 t

Question 30

formula for relating initial velocity and constant acceleration without final velocity

Answer 30

x= Vi t+1/2 at^2

Question 31

kinematic equation without time

Answer 31

Vf^2= Vi^2+2ax