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A bullet had a speed of 62 m/s at the peak of its trajectory. The time...

A bullet had a speed of 62 m/s at the peak of its trajectory. The time elapsed from the launch of the bullet to the peak of its trajectory was 7.7 seconds. The bullet fell 21 meters from the peak of its trajectory to its impact. What was the launch speed of the bullet? What was the speed of the bullet at impact? Don't assume that the time and displacement in the y-direction from launch to peak are the same as peak to impact. Please include a diagram and a clear explanation of the solution.

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