#### Kinematics Three Marks Questions

11th Standard

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Physics

Time : 00:45:00 Hrs
Total Marks : 30
10 x 3 = 30
1. Define angular displacement and angular velocity.

2. What is non uniform circular motion?

3. Write an expression for displacement vector in Cartesian coordinate system and also show graphically.

4. How is a function represented graphically and mathematically.

5. Define average velocity and represent it graphically.

6. Write an expression for component of Instantaneous velocity or velocity and also define it.

7. What does the slope of 'position-time' graph represent? Which physical quantity is obtained from it?

8. A man moving in rain holds an umbrella inclined to the vertical though the rain drops are falling vertically. Why?

9. What are the unit vectors along the negative x-direction, negative y-direction, and negative z-direction?

10. Two vectors $\vec A$ and $\vec B$ are given in the component form as $\overrightarrow { A } =5\hat { i } +7\hat { j } -4\hat { k }$ and $\overrightarrow { B } =6\hat { i } +3\hat { j } +2\hat { k }$. Find $\vec { A } +\vec { B } ,\vec { B } +\vec { A } ,\vec { A } -\vec { B } ,\vec { B } -\vec { A }$