chapter 2

Question 1

v

Answer 1

speed- Speed is the magnitude of the velocity vector and is thus always positive. remember this

Question 2

vy

Answer 2

represents velocity of an object

Question 3

delta x

Answer 3

final minus initial- displacement formula

Question 4

Velocity is a vector, having both a magnitude and a direction. When we draw a general velocity vector on a diagram, we use an arrow labeled with the symbol

Answer 4

v arrow

Question 5

displacement

Answer 5

xf-xi= delta x

Question 6

faster speed

Answer 6

steeper slope

Question 7

slope of graph

Answer 7

rise/run change in x/t

Question 8

instantaneous velocity

Answer 8

An object’s velocity—its speed and direction—at a specific instant of time t

Question 9

displacement

Answer 9

how far an object is moving

Question 10

acceleration/v vs time graph, roc of velocity

Answer 10

a= delta vx/ delta t

Question 11

velocity

Answer 11

We use the symbol v, with no subscript, to represent the speed of an object. Speed is the magnitude of the velocity vector and is thus always positive.

Question 12

kinematics

Answer 12

delta y over delta t

Question 13

slope of graph

Answer 13

rise/run delta x/delta t

Question 14

area under the velocity graph

Answer 14

xf-xi

Question 15

area of triangle between t0 and t3 example

Answer 15

.5bh

Question 16

acceleration

Answer 16

delta v x/ delta t