Velocity data of the space shuttles is provided in the table.

Here the time period is not equally spaced.

So determine width of the interval in each interval separately.

Width of the interval is $\"\"$ .

$\"\"$ .

Determine the left end approximation :

Left end points are $\"\"$ and $\"\"$ .

$\"\"$ .

$\"\"$

Substitute all corresponding velocities values in above expression from the table.

$\"\"$

Height above the earth surface of the Endeavour is $\"\"$ ft.