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If vecA=3hati+2hatj and vecB=4hatj-5hatk...

If `vecA=3hati+2hatj` and `vecB=4hatj-5hatk` then find
`|vecA-vecB|`

Text Solution

Verified by Experts

`vecA-vecB=(3hati+2hatj)-(4hatj-5hatk)`
`vecA-vecB=3hati-2hatj+5hatk`
`:.|vecA-vecB|=sqrt(3^2+2^2+5^2)=sqrt38`
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SUBHASH PUBLICATION-MOTION IN PLANE-NUMERICALS WITH SOLUTIONS
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  2. If vecA=3hati+2hatj and vecB=4hatj-5hatk then find |vecA+vecB|

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  3. If vecA=3hati+2hatj and vecB=4hatj-5hatk then find |vecA-vecB|

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  7. Write the values of the following. hati.(hatixxhatj)

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  8. Write the values of the following. hatk.(hatixxhatk)

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  9. Write the values of the following hatk.hatk

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