Question: During a fireworks display, a shell is shot into the air with a velocity of 58 m/s, its height in meters after t seconds is

During a fireworks display, a shell is shot into the air

During a fireworks display, a shell is shot into the air with a velocity of 58 m/s, its height in meters after t seconds is given by y =58t - 20t2. Find the velocity when t =0.5

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