1. The kinematic solution derived above describes the motion at the critical speed . 2. The first three critical speeds are arranged to be below the running speed. 3. Consequently, these critical speeds were called late and the aircraft's takeoff roll was abnormally prolonged. 4. After a few minutes, the top falls when air friction slows it below the critical speed . 5. The critical speed of a rotating machine occurs when the rotational speed matches its natural frequency. 6. To become airborne, a plane must reach a critical speed as it rolls down the runway. 7. Wrestling the critical speeds of a planet, 8. If the initial speed of the fluid is below the critical speed , then no jump is possible. 9. This slight handling difference gave Bourdais a critical speed advantage at the end of the long main straight. 10. Critical speed was noted as between.
