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Define instantaneous power. Express it ...

Define instantaneous power. Express it as the scalar product of force and velocity vectors.

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Scalar product of vectors

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SL ARORA-Work, Energy and power-EXERCISE
  1. Define instantaneous power. Express it as the scalar product of force...

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  2. What is the work done is crrrying a suitcase wighting 10 kg f on his h...

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  3. What is the work done is crrrying a suitcase wighting 10 kg f on his h...

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  4. Calculate the amount of work done by a labourer who carries n bricks, ...

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  5. A man moves on a straight horizontal road with a block of mass 2 kg i...

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  6. A force F = (2hati-6 hatj) N is applied on a body. which is sliding ov...

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  7. A force vecF=hat i+5 hat j+7 hat k acts on a particle and displaces it...

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  8. A particle is acted upon by constant forces vecF=-2hati+3hatj+4hatk an...

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  9. A man weighing 50kg f supports a body of 25 kg f on his head. What is ...

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  10. Explain how work done by a variable force may be measured.

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  11. A force F=(15+0.50x) acts on a particle in the X-directation ,where F ...

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  12. A force F=a+b x acts on a particle in the X-direction, where a and b a...

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  13. The relation between the displacement x and the time t for a body of m...

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  14. Figrue shows the F-x graph. Where F is the force applied x is the dist...

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  15. Calculate work done in moving the object from x=2 to x=3m from the gr...

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  16. The momentum of a body of masss of 5kg is 500kg ms^(-1). Find the its...

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  17. A bullet of mass 20g is found is found to pass two points 30cm apart i...

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  18. A body of mass 2kg is resting on rough horizontal surface. A force 20N...

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  19. A body of mass 2kg is resting on a rough horizontal surface. A force o...

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  20. A electron and a proton are detected in a cosmic ray experiment, the e...

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  21. A neutron of mass 1.66xx10^(-27)kg is moving with a speed of 7xx10^(5)...

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