Question

I have a picture of the question..help =(

Answer 1

get x and y components of each vector

Answer 2

how do i do that?

Answer 3

A is easy
magnitude * cos(theta)=x
magnitude * sin(theta)= y

Answer 4

A is just

0 i + 16 j

you try B and C

Answer 5

b= i+20j
c= 20i+j

??

Answer 6

Magnitude of B is 20

Answer 7

right

Answer 8

direction is 45 degree

x component = 20 * Cos[45] = 20/ sqrt[2]

y component = 20 * Sin[45] = 20/ Sqrt[2]

Answer 9

how did u get that lol

Answer 10

How did I get what?

Answer 11

the x and y comps

Answer 12

usually,

x component= magntide * cos(direction)

y component = magnitude* sin(direction)

Answer 13

ok

Answer 14

you try C

Answer 15

i got the same thing for both for b.....14.14...is that right?

Answer 16

Yes

Answer 17

and c would be the same as B

Answer 18

almost same

Answer 19

x component = 20 * Cos[-45] = 14.14
y component = 20 * Sin[-45]= -14.14

Answer 20

ok

Answer 21

so units would be 32.50???

Answer 22

and 147.5 degrees?

Answer 23

and what is the equation for r lol what we have been doing

Answer 24

add all the x components, add all the y components

Answer 25

A={0,16}
B={14.14,14,14}
C={14,14,-14,14}

Answer 26

0+14+14=28
16+14.14-14.14=16

{28,16} is our resultant vector

Answer 27

thats what i got..ok good lol

Answer 28

{28.28,16} is our resultant vector

Answer 29

find magnitude and direction

Answer 30

for mag i got 32.5
for direction i got 147.5?

Answer 31

magnitude is right

Answer 32

I got 29.499 for direction

Answer 33

let me try again then..

Answer 34

o oops lol well let me put that in and see waht happens

Answer 35

yep =) good job again!

Answer 36

so that's your b)

Answer 37

yea i got all of it right =)

Answer 38

gj,