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Displacement of a particle is given by t...

Displacement of a particle is given by the expression `x = 3 t ^ { 2 } + 7 t - 9`, where x is in meter and t is in seconds. What is acceleration ?

A

10m/s²

B

15m/s²

C

8m/s²

D

6m/s²

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SURA PUBLICATION-KINEMATICS-SHORT ANSWER QUESTIONS:
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  4. Is zero relative velocity possible ? Explain ?

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  5. A railway train 400m long is going from Chennai Central railway statio...

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  6. State any four characteristics of Displacement.

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  7. Under what condition the distance and displacement of a moving object ...

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  8. What is meant by point mass and give suitable example ?

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  9. What do you mean by motion in one, two and three dimensions ?

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  10. What causes variation in velocity of a particle ?

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  11. What is meant by Collinear vector ? Explain them .

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  12. Define unit vector .

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  13. Define Orthogonal unit vectors.

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  14. Deepak went on his bike from Chennai to Thiruvallur at a speed of 60 k...

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  15. How are two vectors expressed in a Cartesian system ? Explain the addi...

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  16. How is the direction of vector product determined ?

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  17. A car moving along a straight highway with a speed of 126 kilometre pe...

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  18. Write the expression for time of flight in projectile motion.

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  19. Distinguish between Distance and Displacement.

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  20. How does an object supposed to be at rest and in motion are considered...

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