### Home > CALC > Chapter 11 > Lesson 11.1.3 > Problem 11-31

11-31.

The position of a ball at time

*t*is specified by the point (*x*(*t*),*y*(*t*)) where*x*(*t*) = 20*t*and*y*(*t*) = 40*t*– 10*t*^{2}. If distance is measured in meters and time is in seconds, Homework Help ✎When will the ball land?

How far does the ball travel horizontally?

How high does the ball go?

This occurs when *y*(*t*) = 0.

Use your answer from part (a) to evaluate *x*(*t*).

If you graph only *y*(*t*), what is the shape of the graph? Where does the max occur on this type of graph?