16303878
Description
Quiz by Deleted user, updated more than 1 year ago
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Created by Darren Hunt
almost 6 years ago
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Copied by Darren Hunt
almost 6 years ago
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Question 1
Question
Find the sum of the given vectors:
<-1,4>, <6,-2> = [blank_start]<5,2>[blank_end]
Answer
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<5,2>
Question 2
Question
Find a + b, 2a + 3b, |a|, and |a-b|.
a=<5,-12>, b=<-3,-6>
Ans:
a+b = [blank_start]<2,-18>[blank_end]
2a+3b = [blank_start]<1,-42>[blank_end]
|a| = [blank_start]13[blank_end]
|a-b| = [blank_start]10[blank_end]
Answer
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<2,-18>
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<1,-42>
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13
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10
Question 3
Question
Find a unit vector that has the same direction as the given vector.
-3i + 7j is equal to the unit vector -3/sqrt(58) i + 7/sqrt(58) j.
Answer
- True
- False
Question 4
Question
Find a unit vector that has the same direction as the vector given.
8i - j + 4k
Answer
-
9i - 9j + 9k
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1/9i -1/9j + 1/9k
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8/9i -1/9j + 4/9k
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8i - j + 4k
Question 5
Question
What is the angle between the vector and the positive direction of the x-axis?
i + sqrt(3)j = [blank_start]60[blank_end] degrees
Answer
-
60
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