PRINTER VERSION «BACK NEXT Chapter 03, Problem 016 2 Your answer is partially co

Question

PRINTER VERSION «BACK NEXT Chapter 03, Problem 016 2 Your answer is partially correct. Try again. For the vectors ä - (3.0m ) + (4.om / ana b = (s.om + (-2.0m), give a + b in ca) unit-vector notation, and as (b) a magnitude and For the vectors and a + b in (a) unit-vector notation, and as (b) a magnitude and (c) an angle (relative to I in the range of (-180°, 180°]). Now give b – a in (d) unit-vector notation, and as (e) a magnitude and (1) an angle (relative to i in the range of (-180°, 180°]) (a) Numberlan' 120/ Units im (b) Number 8.2460 unitsm (C) Number 75.960 units (degrees) (d) Number 2 D'F-60 i units in (e) Number 6.32 Dunitsima Units (degrees) (f) Number'i -18.44 * (degrees)

Explanation / Answer

a=3i+4j

b=5i-2j

a)a+b

=(3+5)i+(4-2)j

8i+2j

b)82+22

=8.246m

c)angle relative to x axis is given by

angle= arctan(y component/x component)

=arctan(2/8)

=14.0360

d)(5-3)i+(-2-4)j

=2i-6j

e)4+36

=6.3245

f)arctan(-6/2)

=-71.5650

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