Posted by **nina** on Sunday, October 7, 2012 at 8:46pm.

a ball is thrown upward at 64 feet per second from the top of an 80 feet high building. The height of the ball can be modeled by S(t) = -16t^2 + 64t + 80(feet), where t is the number of seconds after the ball is thrown. describe the graph model

- math -
**bobpursley**, Sunday, October 7, 2012 at 8:58pm
graph of what? Position vs time?

It will be a parabola, starting on one side at t=0 v=64

The velocity slows to zero, then goes negative until the end.

- math -
**housam**, Tuesday, October 7, 2014 at 4:20am
you throw a tennis ball upward from a height of 4 feet with an initial vertical velocity of 36 feet per second.

a. write an equation that models the height h (in feet) of the tennis ball as a function of the time t (in seconds) after its thrown.

b. does the ball reach a height of 30 feet? explain.

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