Definition & Meaning | English word DECELERATES

As in ramjets, a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion (hence ramjet), but whereas a ramjet decelerates the air to subsonic velocities before combustion using shock cones, a scramjet has no shock cone and slows the airflow using shockwaves produced by its ignition source in place of a shock cone.
Most ricochets are caused by accident and while the force of the deflection decelerates the projectile, it can still be energetic and almost as dangerous as before the deflection.
The accordion effect in road traffic refers to the typical decelerations and accelerations of a vehicle when the vehicle in front decelerates and accelerates.
The burble fence acts to stabilize the ballute as it decelerates through different flow regimes, typically descending from faster (even supersonic) flows into subsonic speeds.
This is done not so much to avoid engine braking per se, but rather to allow a low throttle opening 2-1 downshift as a car decelerates, to avoid a loud (and potentially abrupt) and unnerving jolt as a result of the downshift.
A serpentine belt with hydraulic tensioner powers the a/c compressor, the water pump, and (via a freewheeling pulley to reduce squeaking when engine decelerates) the alternator.

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Definitions of DECELERATES