# Semester 1 Final Flashcards

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1
Q

speed

A

how fast the object is moving

2
Q

velocity

A

speed in a given direction

3
Q

position = _______________

A

(velocity)(time) + starting position

4
Q

equation to find velocity

A

change in position over change in time

5
Q

motion maps

A

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

6
Q

what do the dots represent on a motion map

A

the objects position each second and velocity is represented the arrow

7
Q

acceleration

A

a change in velocity in a given amount of time

8
Q

equation to find velocity

A

acceleration = velocity final - velocity initial over time

9
Q

acceleration is a ______

A

vector that can be positive or negative

10
Q

slope of a velocity time graph

A

acceleration

11
Q

position time squared graph =

A

1/2 acceleration

12
Q

velocity position graph =

A

2(acceleration)

13
Q

acceleration due to gravity

A

9.8m/s2

14
Q

free fall equations

A

Vf= gt
delta xy = 1/2gt2

15
Q

vector

A
• arrow that show magnitude and direction
• length of arrow = magnitude
• point shows direction
16
Q

how do you add vectors together

A

tip to tail method

17
Q

what are scalars

A

magnitude only (ex. speed)

18
Q

vectors have both

A

magnitude and direction

19
Q

velocity is a ______

A

vector

20
Q

inertia

A
• object’s resistance to a change in motion

- directly related to mass

21
Q

coefficient of friction

A

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

22
Q

static friction

A

force that opposes the start of any motion

23
Q

kinetic friction

A

force that opposes motion once the object is moving

24
Q

static friction is always ________ than kinetic friction

A

bigger

25
Q

depends on gravitational force and can change from location to location

A

weight

26
Q

what something is made up of

A

mass

27
Q

newtons law of universal gravitation

A

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

28
Q

what is the gravitational constant

A

G= 6.67 x 10^-11

29
Q

law of universal gravitation aka

A

inverse square law

30
Q

newton’s third law

A
• for every action, there is an equal and opposite reaction

- forces occur in equal and opposite pairs

31
Q

newton’s second law

A

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

32
Q

Fnet = ___x_____

A

mass x acceleration