Mathematics, 21.08.2019 23:00, timithythaxton

The height (in meters) of a projectile shot vertically upward from a point 2m above ground level with an initial velocity of 24.5m/s is h=2+24.5t-4.9t^2 after t seconds. when does the projectile hit the ground? with what velocity does it hit the ground?

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The height (in meters) of a projectile shot vertically upward from a point 2m above ground level wit...