♥hey friends ♥
☆☆plzz give me some important question of ch-motion of physics of class 9th. ☆☆
plzz its very urgent ☺☺
Answers
1. What do you mean by motion?
2. Define distance.
3. Define displacement.
4. Difference between displacement and distance.
5. Define speed and write its s.i. unit.
6. Define average speed.
7. Define velocity.
8. Define average velocity.
9. Define acceleration.
10. Define uniform acceleration.
11. Define non-uniform acceleration.
12. A bus decreases its speed from 80km/h to 60km/h in 5s. Find the acceleration of the bus.
13. Derive the equation, v=u+at.
14. Derive the equation s=ut+1/2at^2 graphically.
15. Derive the equation v^2-u^2=2as graphically.
16. What do you mean by uniform circular motion?
17. Name the force which is responsible for uniform circular motion.
18. Is uniform motion ,accelerated motion? How?
19. Write an expression for the velocity of an object moving on a circular path on radius r and time taken for one complete round is t.
20.