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If vecF = 4hati - 2hatj and vecS = 3hat...

If `vecF = 4hati - 2hatj and vecS = 3hati + 4hatk`. What is the work done?

A

4 units

B

8 units

C

12 units

D

15 units

Text Solution

Verified by Experts

The correct Answer is:
C
`W= vecF. vecS = (4 hati - 2 hatj).(3hati + 4hati) = 12` units.
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