Another naturalist in 1899 estimated the duck's speed at 130 miles per hour.

Langmuir estimated the fly's true speed at 25 miles per hour.

I estimate her current speed at about twenty miles per hour.

Bond estimated the ship's speed at six or seven knots.

Could she estimate the car's speed and therefore the mileage?

Only the best are able to estimate their speed with nothing more than a head-to-toe check of how they feel.

It was impossible to estimate his speed; he could only struggle along and hope for the best.

The pilot would first determine the direction of the wind, and estimated its speed.

Pitt estimates their top speed as 120 miles an hour.

One investigator estimated its speed at 90 miles per hour.