Consider a horizontal surface moving ver...

Consider a horizontal surface moving vertically upward with velocity `2ms^(-1)`. A small ball of mass 2 kg is moving with velocity `(2hati-2hatj)ms^(-2)` If the coefficient of restitution and coefficient of friction are `(1)/(2) and (1)/(3` respectively, find the horizontal velocity `("in "ms^(-1))` of the ball after the collision.

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