In a vector p , 'x' and 'y' components have magnitudes 2 units and 5 units respectively. A vector q , along negative Y axis has magnitude of 3 units. Then p ⋅ q is

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In a vector p ​ , 'x' and 'y' components have magnitudes 2 units and 5 units respectively. A vector q ​ , along negative Y axis has magnitude of 3 units. Then p ​ ⋅ q ​ is

TestHub · Accepted Answer

Given p ​ = 2 i ^ + 5 j ^ ​ Given q ​ = − 3 j ^ ​ p ​ ⋅ q ​ = ( 2 i ^ + 5 j ^ ​ ) ⋅ ( − 3 j ^ ​ ) p ​ ⋅ q ​ = ( 2 × 0 ) + ( 5 × − 3 ) = − 15 Answer: − 15

Physics - Vectors Question with Solution | TestHub

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