Solve problem. See Example.Height of a Ball A ball is thrown straight up into the air. The...

Solve problem. See Example.

Height of a Ball A ball is thrown straight up into the air. The function defined by  in the graph gives the height of the ball (in feet) at t seconds. (Note: The graph does not show the path of the ball. The ball is rising straight up and then falling straight down.)

(a) What is the height of the ball at 2 sec?

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(b) When will the height be 192 ft?

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(c) During what time intervals is the ball going up? down?

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(d) How high does the ball go, and when does the ball reach its maximum height?

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(e) After how many seconds does the ball hit the ground?

Example

INTERPRETING A GRAPH

Figure 30