kinematics

Question 1

kinematics

Answer 1

study of motion of an object without reference to forces

Question 2

motion

Answer 2

change in position of an object with respect to time

Question 3

distance is a _____ quantity, whereas displacement is a _____ quantity

Answer 3

scalar, vector

Question 4

speed

Answer 4

scalar quantity, cannot be 0, distance/time

Question 5

velocity

Answer 5

vector quantity, can be 0, displacement/time, displacement = (xf-xi)/t, instantaneous velocity = change of x/t

Question 6

acceleration

Answer 6

rate of change of velocity, units: m/s squared, acceleration due to gravity and it is constant

Question 7

free fall

Answer 7

object falling without air resistance and friction

Question 8

falling objects

Answer 8

force of gravity causes objects to fall toward center of earth, g=9.8 m/s squared

Question 9

what is a v with the straight line on top?

Answer 9

average velocity

Question 10

what does V with a subscript o or i mean?

Answer 10

initial velocity

Question 11

what does V with a subscript f mean?

Answer 11

final velocity

Question 12

constant acceleration

Answer 12

d = average velocity(t)

Velocity is not equal to average velocity

average velocity = (Vo+Vf)/2

Question 13

constant speed

Answer 13

d = vt

velocity = average velocity

d = Xf-Xo