decelerate• Between the bowshock and the magnetopause the solar wind is greatly decelerated.• Alphaparticles are just high-energy 4He nuclei; after decelerating and picking up electrons, they become atoms of 4He.• An underpowered helicopter will rapidly decelerate as soon as you apply any control input and the model will come to a dead stop-probably inverted.• Steeply, noses high, the whole flight rapidly decelerated for the landing.• I have an aggravatingwhine coming from my gearbox every time I decelerate in fourthgear.• Only four steps are required to decelerate the motor, as the loadtorquecontributes to the decelerating torque.• Then, with a single powerfulengine burn, the spacecraft can decelerate to a soft landing on the lunar surface.• Our flight continued to decelerate to about 70 knots.