alleryStart learning →A ship's displacements are a = (3, 4) km and b = (1, -2) km. What is the resultant displacement a + b?
A(2, 6)
B(3, -8)
C(4, 2)
D(4, 6)
Answer & Solution
Correct answer: C. (4, 2)
Sum the x parts, 3 + 1 = 4, and the y parts, 4 + (-2) = 2.
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