physics equations

Question 1

acceleration

Answer 1

vf-vi/t

Question 2

average speed

Answer 2

total distance/time

Question 3

average velocity

Answer 3

displacement/time

Question 4

When it’s slowing down, velocity and position are?

Answer 4

opposite signs

Question 5

When it’s speeding up, velocity and position are?

Answer 5

the same sign

Question 6

Fx

Answer 6

Fcos theta

Question 7

fy

Answer 7

fsin theta

Question 8

how to find theta

Answer 8

inverse tan (fy/fx0

Question 9

Fn when fn doesnt equal mg

Answer 9

mg-fy

Question 10

at constant velocity

Answer 10

a = 0

Question 11

when a box is at rest on a table

Answer 11

Fg = ma
Fn = Fg

Question 12

when a box is hanging from a ceiling

Answer 12

Ft = mg
T = W

Question 13

when a box is pulled upwards at a constant velocity

Answer 13

the acceleration is zero since the velocity is constant.
ma = t-w
0 = t-w
T = mg

Question 14

a block is pulled upward with a constant acceleration

Answer 14

T = ma + mg

Question 15

What is the acceleration when there is constant speed?

Answer 15

a=0

Question 16

when there is an angle free body problem, Fn =?

Answer 16

mg - fy

Question 17

When there is an angle, how do you find sumfx when kinetic friction is there?

Answer 17

fx - fk

Question 18

what is fk?

Answer 18

meu(FN)

Question 19

for an incline, what does Fn =?

Answer 19

mgcos(theta)

Question 20

for a box sliding down with no friction, what is the fg2?

Answer 20

fg2 = mgsin(theta)

Question 21

how do you find the acceleration for a box sliding down an incline?

Answer 21

a = gsin(theta)

Question 22

On an incline, when velocity is constant, what does that mean?

Answer 22

acceleration is zero and fT = mumgcos(theta)

Question 23

On an incline, at a constant acceleration, what would you calculate the acceleration?

Answer 23

a = gsin(theta) - mugcos(theta))

Question 24

when an incline problem asks of tension what equation do you use?

Answer 24

Ft = m(g-a)
Ft2 = m(g+a)