The friction coefficient between the horizontal surface and blocks A and B are `(1)/(15)` and `(2)/(15)` respectively. The collision between the blocks is perfectly elastic. Find the separation (in meters) between the two blcoks when they come to rest.

The friction coefficient between the horizontal surface and blocks A a

1.	The friction coefficient between the horizontal surface and blocks A and B are `(1)/(15)` and `(2)/(15)` respectively. The collision between the blocks is perfectly elastic. Find the separation (in meters) between the two blcoks when they come to rest.
Answer» Correct Answer - `5 m` Velocity of block A just before collision `v_(A) = sqrt(u_(A)^(2) - 2mugx) = sqrt(16 - 2 (1)/(15) (10) (2)) = sqrt((40)/(3))` Velocity of Block B just after collision `v_(B) = v_(A) = sqrt((40)/(3))` Velocity of Block A just after collision `= 0` Total dsitance travelled by block B `= (v_(B)^(2))/(2mug) = (40//3)/(2(2)/(15) (10)) = 5m`

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The friction coefficient between the horizontal surface and blocks A and B are `(1)/(15)` and `(2)/(15)` respectively. The collision between the blocks is perfectly elastic. Find the separation (in meters) between the two blcoks when they come to rest.

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