physics

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A circus a dog is traned to run a stranght path of length 50m/s in the direction AB as shown in the accompanying diagram.the dog starting from rest can attain a maxium speed of 5m/s in 10sec when released from any point along the path AB .the after it maintains the speeds of 5m/s.then 10sec after dog is released a ball fired vertically upwards point B with a speed of 15m/s
At what point along path AB must the dog be released so that it is capable of catching the ball before the ball strike the gound
dog acceleration from rest dog constant velocity

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