I estimate their equivalent ground speed in excess of one hundred miles per hour.

He touched down in the sand and ran quickly to arrest his ground speed.

The range can be seen as the average ground speed multiplied by the maximum time in the air.

It was making a ground speed of 910 miles per hour.

The wind's strong enough to give us great lift right now, but our ground speed is zero.

This eliminated the need for a stopwatch to measure the ground speed.

This is because good control is reached at a much lower ground speed.

Do you have any idea of our position and ground speed?

That boosted their ground speed to 782 miles per hour.

"Sorry," she said, moving on at her top ground speed.