discussion for physics as level ,appearing for march or may june

[krishnapatelzz]

people who are reappearing for physics as level or giving it first time, post your doubts here

 

[krishnapatelzz]

so for next 5 days we will start discussing from ch 3 kinematics and the other 5 days for ch 4 and so on......

 

[krishnapatelzz]

so here's the first question
a student .standing on the platform at a railway station,notices that the first two carriages of an arriving train pass her in 2.0s , and next two in 2.4s. the train is decelerating uniformly. each carriage is 20m long . when the train stops, the student is opposite the last carriage.
how many carriages are there in the train?
answer is 8

 

[The Sarcastic Retard]

so here's the first question
a student .standing on the platform at a railway station,notices that the first two carriages of an arriving train pass her in 2.0s , and next two in 2.4s. the train is decelerating uniformly. each carriage is 20m long . when the train stops, the student is opposite the last carriage.
how many carriages are there in the train?
answer is 8

http://physics-ref.blogspot.in/2015/03/physics-9702-doubts-help-page-73.html
Q396