Скачать или смотреть Exercise questions unit 3 class 11 physics nbf | National book foundation | 11th class physics ch 3

Exercise questions unit 3 class 11 physics nbf | National book foundation | 11th class physics ch 3

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00:13 Question 01
04:32 Question 02
10:17 Question 03
16:43 Question 04
22:09 Question 05
25:56 Question 06
28:45 Question 07
33:37 Question 08
38:55 Question 09
41:55 Question 10
49:59 Question 11
54:04 Question 12

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Short Questions

1) What are the conditions for using the equations of motion?

2) You through a small ball vertically up in the air. How are the velocity and acceleration of the ball oriented with respect to one another (a) when the ball is going upward (b) when the ball is coming downward?

3) For a projectile motion, is the velocity zero at any instant? Is the acceleration zero at any instant?

4) Construct motion diagrams showing the velocity and acceleration of a projectile at several points along its path, assuming (a) the projectile is launched horizontally and (b) the projectile is launched at an angle → with the horizontal.

5) An aeroplane while flying horizontally drops a bomb when reaches exactly above the target, but missed it. Explain why?

6) What is the difference between explosion and collision? Give one example of each.

7) Why do a slow-moving loaded truck and a speeding rifle bullet each have a large momentum?

8) What is the difference between elastic and inelastic collision?

9) An object that has a small mass and an object that has a large mass have the same momentum. Which object has the largest kinetic energy?

10) Can objects in a system have momentum while the momentum of the system is zero? Explain your answer.

11) For any specific velocity of projection, prove that the maximum range is equal to four times of the corresponding height.

12) Is momentum conserved when a bat hits a ball.

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