The optimum speed varies with the type of vehicle, although it is usually reported to be 35 mph (56 km/h) or higher.

The ramming impact had been a glancing one, and at nothing like the optimum speed for destruction.

"Make the necessary course adjustments and proceed at optimum speed."

The software and controls regulate equipment to run at the optimum speed that requires the least energy.

The optimum speed for a launch depends on both the type of glider and the wind strength.

The optimum speed depends on the characteristics of the product being used and the particle size.

In practice the optimum speed can be determined from experience and systematic testing.

If they bend too much, the bee responds by moving its wings less strongly and so maintains an optimum speed.

Unrestrained animals will typically move at the optimum speed for their gait to minimize energy cost.

This allowed bombers to fly an optimum speed when approaching ship targets.