9

Max Time:30 mins

Max Marks:25

1.  Why do passengers tend to fall sideways when the bus takes a sharp u turn?            (2 marks)

2.  Why should a passenger hold on to prevent himself from swaying in a turning bus?            (2 marks)

3.  Why do passengers tend to fall back when it starts suddenly?            (2 marks)

4.  Why do passengers jumping out of a rapidly moving bus fall forward with his face downwards, if he does not run forward?            (2 marks)

5.  Why does a passenger jumping out of a rapidly moving bus fall forward with his face downwards?            (2 marks)

6.  Why can dust be removed by shaking it, or beating it by a carpet?            (2 marks)

7.  Why does a bullet when fired against a glass window pane make a hole in it, and the glass pane will smash it?            (2 marks)

8.  Why does an athlete take a longer jump if he comes running from a distance than when he jumps suddenly from the take-off line?            (2 marks)

9.  What happens when you shake a wet piece of cloth? Explain, why?            (2 marks)

10.  Why is it advised to tie a rope on the luggage while you travel by the bus?            (2 marks)

11.  How does a boat move forward into the water when the boatman presses one end of the pole against the ground?            (2 marks)

12.  Why is it difficult for a fireman to hose, which ejects large amount of water at a high velocity?            (3 marks)