A coin is dropped from a hot-air balloon that is 290 m above the ground and rising vertically at 8.5 m/s. For this problem use a coordinate system in which up is positive. Find the maximum height, in meters, that the coin attains.   Find its height above the ground, in meters, 4.00 s after being released.   Find its velocity, in meters per second, 4.00 s after being released.   Find the time, in seconds, that it takes the coin to hit the ground.

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Projectile Motion