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A tennis ball launcher is placed on the ...

A tennis ball launcher is placed on the floor at the front end of a train that has a uniform forward acceleration of 2 m/s2. The launcher projects a ball at an initial speed of 20 m/s with respect to the train toward its rear. The ball achieves a maximum height of 10.0 m. Ignore air resistance. Find how far (in m) from the front end of the train the ball lands inside the train.

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