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#### Kinematics Two Marks Questions

11th Standard

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Physics

Time : 00:45:00 Hrs
Total Marks : 30
15 x 2 = 30
1. Define a vector. Give examples.

2. Write a short note on the scalar product between two vectors.

3. Write a short note on vector product between two vectors.

4. Convert the vector $\vec { r } =3\hat { i } +2\hat { j }$ into a unit vector.

5. An object at an angle such that the horizontal range is 4 times of the maximum height. What is the angle of projection of the object?

6. State the vector product of two vectors is not commutative but anti commutative.

7. What is meant by resolution of vector?

8. Give some examples of physical quantities which can be expressed as the vector product of two vectors.

9. What are the assumptions made in the projectile motion?

10. Find the speed of the projectile when it hits the ground?

11. Define Time of flight (Tf) of a projectile and derive?

12. Does a scalar quantity depends upon the frame of reference chosen.

13. When the sum of two vectors is maximum?

14. Using components methods, add the following vectors.
$\overrightarrow { A } ={ A }_{ x }\hat { i } +{ A }_{ y }\hat { j } +{ A }_{ z }\hat { k }$
$\overrightarrow { B } ={ B }_{ x }\hat { i } +{ B }_{ y }\hat { j } +{ B }_{ z }\hat { k }$

15. Write note on function with example.