show work please I l U PIIay, Jan.26, 2018. You may want to takc as much time an

Question

show work please

I l U PIIay, Jan.26, 2018. You may want to takc as much time and as much help from any source from your classmates to solve these five problems. Please do not forget to print your name on top of this take-home assignment. Problem 1 (2). A displacement vector r in the xy plane is 15 m long and directed at angle 0- 30 ° in following figure. Determinc (a) the x component and (b) the y componcnt of the vector Problem 2 (9). Two vectors arc given by a·m(4.0 m)T-(3.0 m)J + (1.0 m) and -(-1.0m)T+ (1.0m)J+ (4.0m)E. In unit-vector notation, find (a) at +T, (b) a-7, and (c) a third vectorz such that - +-o.

Explanation / Answer

1(2) : (A) x-component = 15 cos30

= 13 m

(B) y - component = 15 sin30

= 7.5 m

2(9): (A) a +b = (4 - 1)i + (-3 + 1)j + (1 + 4)k

= 3i - 2 j + 5 k

(B) a -b = 5i - 4j -3 k

(c) a- b + c = 0

c = - (a - b) = - ( 5i - 4j -3 k)

c = - 5 i + 4j + 3k

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