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Physics: Post your doubts here!

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u see that train will overtake the other train when there distances will equal.
the 1st train is travelling with constant speed hence no acceleraion
the 2nd train is acclerating from rest hence no inital speed
using the formula
s=ut+0.5at^2
for the first train
s=10t
for the train starting from rest
s=0.5*0.5t^2
placing both equations equal to each other.
10t=0.5*0.5*t^2
solve nad get 40s

THANK YOUUUUUUUUUUUUUUUUUUUU you are a lifesaver
 
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Its 200N how?
concentrate on the base units of each quantity.
u have been provided with
density-kgm^3
velocity-ms^-1
area-m^2
hence find volume of water per seconnd by multiplying velocity and area
then to find mass per second, multiply your volume with density.
now u have kgs^-1 mass per second
using the force=mv/t
force=(m/t)*v
substitute and find the answer
 
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Hey, i have a question!
I took Math in AS and got a "D", now i am planning to drop math and carry on with my A2 with only Physics and ICT.
What field's can i take this way?
Please reply ASAP
 
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Hey, i have a question!
I took Math in AS and got a "D", now i am planning to drop math and carry on with my A2 with only Physics and ICT.
What field's can i take this way?
Please reply ASAP
umm with physics and ICT u can go into software engineering or computer sciences with artificial intelligence or maybe in media :D but u see all degrees require atleast of minimum 3 subjects in Alevels, but u only have to so i wud recommend giving a third subject. :D
 
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umm with physics and ICT u can go into software engineering or computer sciences with artificial intelligence or maybe in media :D but u see all degrees require atleast of minimum 3 subjects in Alevels, but u only have to so i wud recommend giving a third subject. :D

Thanks, i hate math though :( !
 
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