A tennis ball is thrown upward with an initial velocity of

Last updated: 8/6/2022

A tennis ball is thrown upward with an initial velocity of 50 feet per second. The release point is 4 feet above the ground. The function h = -16t² + 50t + 4 represents the height h (in feet) of the tennis ball after t seconds. The graph is shown below. Using the graph, estimate the number of seconds passed when the tennis ball is 30 feet above the ground.