Semester 1 Final

Question 1

speed

Answer 1

how fast the object is moving

Question 2

velocity

Answer 2

speed in a given direction

Question 3

position = _______________

Answer 3

(velocity)(time) + starting position

Question 4

equation to find velocity

Answer 4

change in position over change in time

Question 5

motion maps

Answer 5

represents position, velocity, acceleration, of an object at various clock readings

Question 6

what do the dots represent on a motion map

Answer 6

the objects position each second and velocity is represented the arrow

Question 7

acceleration

Answer 7

a change in velocity in a given amount of time

Question 8

equation to find velocity

Answer 8

acceleration = velocity final - velocity initial over time

Question 9

acceleration is a ______

Answer 9

vector that can be positive or negative

Question 10

slope of a velocity time graph

Answer 10

acceleration

Question 11

position time squared graph =

Answer 11

1/2 acceleration

Question 12

velocity position graph =

Answer 12

2(acceleration)

Question 13

acceleration due to gravity

Answer 13

9.8m/s2

Question 14

free fall equations

Answer 14

Vf= gt
delta xy = 1/2gt2
Vf2= 2adeltax

Question 15

vector

Answer 15

• arrow that show magnitude and direction
• length of arrow = magnitude
• point shows direction

Question 16

how do you add vectors together

Answer 16

tip to tail method

Question 17

what are scalars

Answer 17

magnitude only (ex. speed)

Question 18

vectors have both

Answer 18

magnitude and direction

Question 19

velocity is a ______

Answer 19

vector

Question 20

inertia

Answer 20

• object’s resistance to a change in motion

- directly related to mass

Question 21

coefficient of friction

Answer 21

value that indicates how much frictional force there is between two surfaces

Question 22

static friction

Answer 22

force that opposes the start of any motion

Question 23

kinetic friction

Answer 23

force that opposes motion once the object is moving

Question 24

static friction is always ________ than kinetic friction

Answer 24

bigger

Question 25

depends on gravitational force and can change from location to location

Answer 25

weight

Question 26

what something is made up of

Answer 26

mass

Question 27

newtons law of universal gravitation

Answer 27

any two objects attract each other with a gravitational force, proprtional to the product of their masses and inversely proportional to the sqaure of the distance between them

Question 28

what is the gravitational constant

Answer 28

G= 6.67 x 10^-11

Question 29

law of universal gravitation aka

Answer 29

inverse square law

Question 30

newton's third law

Answer 30

- for every action, there is an equal and opposite reaction | - forces occur in equal and opposite pairs

Question 31

newton's second law

Answer 31

the acceleration of an object is directly proportional to the net force and inversely proportional to the mass of the object

Question 32

Fnet = ___x_____

Answer 32

mass x acceleration