The equation h(t) = -4.9t² + 25t expresses the approximate height, h, in meters, of a ball t seconds after it is launched

Question

The equation h(t) = -4.9t² + 25t expresses the approximate height, h, in meters, of a ball t seconds after it is launched vertically upward from the ground with an initial velocity of 25 meters per second. After approximately how many seconds will the ball hit the ground?

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