Later after the first collision do two blocks collide again

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A 200g block is released from rest at a height of 25 cm on a frictionless 30 degree incline. It slides down the incline and then along a frictionless surface until it collides elastically by an 800 g block at rest 1.4 m from the bottom of the incline.

How much later after the first collision do the two blocks collide again?

Reference no: EM13661056

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