User talk:Love gupta

Love gupta this is basically for class 10(ICSE) for their good preparation for physics.Deserving students must read this.

Force

force is that physical cause which moves or tends to move the another body or(which changes the physical dimensions of the body).

Newton's second law for motion:Rate of change of linear momentum is directly proportional to the force applied. i.e.

SPECIAL RELATIVITY
The ultimate speed of light is observed to c regardless of the inertial frame from which it is observed. Now the question arises is: let us suppose their is an observer in the spacecraft with a torch in his hand.The spacecraft is moving with speed greater than the speed of light.The spacecraft switched on the torch.Now will the light will move ahead of torch or behind it?

The answer is yes it will move ahead of torch.And it is also possible to travel faster than speed of light. To understand this let us take an example: Let the observer in the spacecraft is holding in his hand a box.The box is having a punch inside it,the punch comes out of the box if the switch is switched on.The observer in the spacecraft is holding the box in his hands with the face of opening of box ahead of him.Now in this we take the precaution that the speed of spacecraft is very much less than c.Let us say 0.8*c,and the speed with which punch comes out is very much less than the speed of spacecraft.Now if the observer in spacecraft switch on the switch,the punch is certainly going to go forward and that is exactly what light will do.

SPECIAL RELATIVITY
Love gupta (talk) 08:20, 13 January 2009 (UTC)The ultimate speed of light is observed to c regardless of the inertial frame from which it is observed. Now the question arises is: let us suppose their is an observer in the spacecraft with a torch in his hand.The spacecraft is moving with speed greater than the speed of light.The spacecraft switched on the torch.Now will the light will move ahead of torch or behind it?

The answer is yes it will move ahead of torch.And it is also possible to travel faster than speed of light. To understand this let us take an example: Let the observer in the spacecraft is holding in his hand a box.The box is having a punch inside it,the punch comes out of the box if the switch is switched on.The observer in the spacecraft is holding the box in his hands with the face of opening of box ahead of him.Now in this we take the precaution that the speed of spacecraft is very much less than c.Let us say 0.8*c,and the speed with which punch comes out is very much less than the speed of spacecraft.Now if the observer in spacecraft switch on the switch,the punch is certainly going to go forward and that is exactly what light will do.