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Read each statement below carefully and ...

Read each statement below carefully and state with reasons , if it is true of false :
(a) The magnitude of a vector is always a scalar , (b) each component of a vector is always a scalar , (c ) the total path length is always equal to the magnitude of the displacement vector of a particle . (d) the average speed of a either greater or equal to the magnitude of average velocity of the particle over the same interval of time , (e ) Three vectors not lying in a plane can never add up to give a null vector .

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The correct Answer is:
(a) T , (b) F , (c ) F, (d) T, (e ) T
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NCERT BANGLISH-MOTION IN A PLANE-EXCERCISES
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  2. State with reasons , whether the following algebraic operations with s...

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  3. Read each statement below carefully and state with reasons , if it is ...

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  4. Establish the following vector inequalities geometrically or otherwise...

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  5. Given a+b+c+d=0 , which of the following statements are correct (...

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  6. Three girls skatting on a circular ice ground of radius 200 m start...

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  7. A cyclist starts from the centre O of a circular park of radius 1 km ...

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  8. On an open ground , a motorist follows a track that turns to his left ...

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  9. A passenger arriving in a new town wishes to go from the station to a ...

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  10. Rain is falling vertically with a speed of 30 ms^(-1) . A woman rides ...

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  11. A man can swim with a speed of 4.0 km/h in still water . How long doe...

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  12. In a harbour , wind is blowing at the speed of 72 km/h and the flag on...

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  13. The celling of a long hall is 25 m high What is the maximum horizontal...

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  14. A cricketer can throw a ball to a maximum horizontal distance of 100 m...

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  15. A stone tied to the end of astring 80 cm long is whirled in a horizon...

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  16. An aircraft executes a horizontal loop of radius 1.00 km with a steady...

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  17. Read each statement below carefully and state , with reasons , if it i...

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  18. The position of a particle is given by r=3.0hati-2.0t^(2)hatj+4.0...

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  19. A particle starts from the origin at t=0 s with a velocity of 10.0hatj...

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  20. hatiandhatj are unit vectors along x - and y- axis respectively . What...

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