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STA

AR

STAAR PHYSICS

TM

RefeRenCe MATeRIAlS

State of Texas

Assessments of

Academic Readiness

fORCe AnD MOTIOn

d

∆

displacement

=

Average velocity

v

=

avg

change in time

t

∆

v

v

−

final velocity

initial velocity

−

=

f

i

Acceleration

a

=

t

∆

change in time

2

2

v

v

−

2

2

(

final velocity)

−

(

initial velocity)

=

Acceleration

f

i

a

=

2∆

d

2

(

displace

m m ent)

(

)(

)

(

)

2

1

initial

change

change

1

2

=

Displacement

∆

d

=

v t

∆

+

a t

∆

+

(acceleration)

velocity

in time

in time

2

2

i

2

v

2

(tangential velocity)

=

Centripetal acceleration

t

a

=

r

radius

c

=

F

ma

=

Net force

(mass)(acceleration)

net

=

Work

W

Fd

=

(force)(distance)

τ

=

Torque

= Fr

(force)(lever arm)

W

work

=

Power

P

=

t

time

Pythagorean theorem

2

2

2

a

b

c

+

=

GRAVITATIOnAl, eleCTRICAl, AnD MAGneTIC fORCeS

(

)

(

)(

)

( )

mass of

mass of

(

)

Force of gravitational

1st object

2nd object

m m

universal

1

2

=

(

)

attraction between

F

G

=

gravitation

2

distance between

g

2

d

2 objects

constant

centers of objects

(

)

(

)(

)

) (

charge of

charge of

Force between

(

)

q q

1st particle

2nd particle

Coulomb’s

=

1 2

2 charged

F

k

=

constant

2

2

electric

C

d

particles

(distance between particles)

=

Electrical power

P

VI

=

(voltage)(current)

V

voltage

=

I

Current

=

R

resistance

R

R

R

R

. . .

=

+

+

+

Equivalent resistance for resistors in series

1

2

3

1

1

1

1

. . .

Equivalent resistance for resistors in parallel

=

+

+

+

R

R

R

R

1

2

3

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Parent category: Education