Question: John throws a 2 . 5 kg object straight up with a speed of 1 0 . 5 m / s What is the speed

John throws a 2.5 kg object straight up with a speed of 10.5m / s What is the speed of the object at its maximum height ? How long does it take to get to maximum height ? What is the maximum height attained by the object ? What is the mass of the object midway on its journey up?

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