A certain vector in the xy-plane has an ...

A certain vector in the xy-plane has an x-component of 4 m and a y-component of 10 m. It is then rotated in the xy-plane so that its x-component is doubled. Then its new y-component is (approximately)

A

20 m

B

7.2 m

C

5.0 m

D

4.5 m

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The correct Answer is:

B

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