kinematics and dynamics

Question 1

cross product involves

Answer 1

sine

Question 2

quantities without direction

Answer 2

scalar

Question 3

dot product involves

Answer 3

cosine

Question 4

dot product gives a _____ quality

Answer 4

scalar

Question 5

how to determine direction of cross product

Answer 5

right hand rule: if C = A x B, point thumb in direction of A, fingers in direction of B, and palm radiates C

Question 6

instantaneous speed

Answer 6

magnitude of instantaneous velocity vector

Question 7

force

Answer 7

push or pull with potential to result in acceleration

Question 8

friction results from

Answer 8

electrostatic interactions

Question 9

type of friction that exists between two objects in motion relative to each other

Answer 9

kinetic

Question 10

type of friction which is a constant value

Answer 10

kinetic

Question 11

mass is a measure of

Answer 11

inertia - its amount of material

Question 12

weight

Answer 12

force experienced by given mass due to gravity

Question 13

acceleration is a __ quantity

Answer 13

vector

Question 14

acceleration

Answer 14

vector representation of change in velocity over time

Question 15

sin90

Answer 15

1

Question 16

newton’s first law

Answer 16

law of inertia: object will remain at rest or move with constant velocity if there is no net force on the object

Question 17

newton’s second law

Answer 17

any acceleration is the result of the sum of the forces acting on the object and its mass (Fnet = ma)

Question 18

newton’s third law

Answer 18

any two objects interacting with one another experience equal and opposite forces as a result of their interaction

Question 19

absence of any net torques

Answer 19

rotational equilibrium

Question 20

gravity parallel to plane of incline

Answer 20

.

Question 21

finding the x component vector

Answer 21

.

Question 22

finding the y component vector

Answer 22

.

Question 23

how to determine direction from component vectors

Answer 23

.

Question 24

A dot B =

Answer 24

.

Question 25

A x B =

Answer 25

.

Question 26

universal gravitation equation

Answer 26

.

Question 27

static friction

Answer 27

.

Question 28

kinetic friction

Answer 28

.

Question 29

weight on earth =

Answer 29

.

Question 30

center of mass

Answer 30

.

Question 31

average acceleration

Answer 31

.