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The initial velocity and the acceleratio...

The initial velocity and the acceleration of a particle are `vecu=3hati+4hatj and veca=0.3 hati+0.4hatj`. The magnitude of its velocity after 10 s is

A

10 units

B

8.5 units

C

`7 sqrt(2) `units

D

7 units

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CHHAYA PUBLICATION-VECTOR-EXERCISE (Multiple Choice Questions)
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  5. Two projectiles, projected with angles (45^@- theta) and (45^@+theta)...

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  6. For a projectile, ("horizontal range")^2 =48xx("maximum height")^2 ...

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  7. Two railway tracks are paraller to west-east direction . Along one tra...

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  8. Angle between the vectors hati +hatj and hati-hatk is

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  9. A vector is multiplied by (-2) .As a result

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  10. In a clockwise system

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  11. A vector vecP=3hati-2hatj+ahatk is perpendicular to the vector vecQ=2h...

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  12. For any two vectors vecA and vecB, if vecA*vecB=|vecAxxvecB| , the mag...

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  13. vecA*vecA=?

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  14. A vector perpendicular to both of (3hati+hatj+2hatk) and (2hati-2hatj...

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  15. A vector normal to acos theta hati+b sin thetahatj is

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  16. A vector vecA of magnitude 2 units is inclined at angles 30^@ and 60^...

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  17. For what values of a and b , the vector (ahati+bhatj) will be a unit ...

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  18. Two billiard balls, starting from the same point, have velocities (ha...

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  19. If |vecAxxvecB|=sqrt(3)vecA*vecB, then |vecA+vecB|=?

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  20. The vector product of vecA and vecB is zero . The scalar product of ve...

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