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Physics: Post your doubts here!

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Please can someone give me a structured answer for question 6 past paper 2 NOv 2008 ?
PLEASE FOR TOMRROW
 
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does anyone knows where are physiucs coursebook answers these were uploaded recently but i cant find the link thanbsk
 
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It says "collide elastically" therefore kinetic energy(K.E) before collision is equal to kinetic energy(K.E) after collision
So Ux+Uy which is initial K.E that is the K.E before collision is equal to Vx+Vy which is the final K.E that is K.E after collision I hope i helped :) need more understanding of elastic collisions??
try this site http://www.s-cool.co.uk/a-level/physics/momentum-and-impulse/revise-it/types-of-collisions (y)
 
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