chapter 2

Question 1

change in an Objects position relative to a reference point

Answer 1

motion

Question 2

The distance and direction of the objects change in position

Answer 2

displacement

Question 3

The length an object travels measured in SI units of meters

Answer 3

distance

Question 4

the rate at which an objects position changes

Answer 4

speed

Question 5

the speed and direction of motion relative to a reference point

Answer 5

velocity

Question 6

rate of change in velocity

Answer 6

acceleration

Question 7

the location of an object in relation to a reference point

Answer 7

position

Question 8

the product of an object’s mass and velocity

Answer 8

momentum

Question 9

acceleration towards the center of a curved or circular path

Answer 9

centripetal acceleration

Question 10

the speed is an object at a given point in time

Answer 10

instantaneous speed

Question 11

a ___ is needed to determine the position of an object

Answer 11

frame of reference

Question 12

on a coordinate system the x axis is the ___ direction and the y axis is the ___ direction

Answer 12

east-west; north -south

Question 13

the slope of a line plotted on a distance time graph is the __

Answer 13

objects speed

Question 14

a ___ is any object that is thrown or shot through the air

Answer 14

projectile

Question 15

two objects that have centripetal acceleration would be ____ and ___

Answer 15

earths orbit; the horses on a carousel

Question 16

____ causes projectiles to have a curved path downward

Answer 16

earths gravity

Question 17

two types of motion in two directions are ___ and ___

Answer 17

circular and projectile

Question 18

the unit for momentum is ___

Answer 18

kg•m/s

Question 19

____ refers to how far an object ends up from where it started

Answer 19

displacement

Question 20

the examples of projectile would be ___ and ____

Answer 20

baseballs arrows

Question 21

in what three situations is an object accelerating

Answer 21

an object is accelerating when it speeds up, slows down or changes direction

Question 22

explain how a truck and mouse with different masses can have the same momentum

Answer 22

if the velocity is higher on the less massed object and the velocity is lower on the higher massed object

Question 23

which type of roller coaster produces the highest speeds and accelerations

Answer 23

steel because it can have higher hills, steeper drops, and inverted loops