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The angle between the two vectors vecA=5...

The angle between the two vectors `vecA=5hati+5hatj` and `vecB=5hati-5hatj` will be

A

`90^(@)`

B

`45^(@)`

C

`0^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
(c):
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MODERN PUBLICATION-MOTION IN A PLANE -COMPETITION FILE OBJECTIVE TYPE QUESTIONS (B. Multiple Choice Questions)
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  2. A particle has an initial velocity 3hati+4hatj and an accleration of 0...

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  3. the value of (vecA+vecB)xx(vecA-vecB) is

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  5. A projectile of mass m is thrown with a velocity v making an angle 60^...

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  6. A police jeep is chasing with, velocity of 45 km//h a thief in another...

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  7. The equations of motion of a projectile are given by x=36tm and 2y=96t...

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  8. Two particles having position verctors vecr(1)=(3hati+5hatj) metres an...

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  9. Two stones are projected with the same speed but making different angl...

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  10. If a vector (2hati+3hatj+ 8hatk) is perpendicular to the vector (4hatj...

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  11. The angle between the two vectors vecA=5hati+5hatj and vecB=5hati-5hat...

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  12. A paricle starting from the origin (0,0) moves in a straight line in (...

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  13. A missile is fired for maximum range with an initial velocity of 20m//...

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  14. A body is moving with velocity 30 m//s towards east. After 10 s its ve...

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  15. The horizontal range and the maximum height of a projectile are equal....

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  16. A particle has initial velocity (2 vec(i)+3 vec(j)) and acceleration (...

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  17. a projectile is fired from the surface of the earth with a velocity of...

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  18. A particle is moving such that its position coordinates (x, y) are (2m...

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  19. A ship A is moving westwards with a speed of 10 km h^(-1) and a ship B...

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  20. A mass m is attached to a thin wire and whirled in a vertical circle. ...

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