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Vận tốc
/vən tɔk/
speed
Vận tốc của ánh sáng trong không gian trống là khoảng 300.000 km/giờ.
The speed of light in a vacuum is about 300,000 km/h.
technical
The rate at which an object changes its position over time, typically measured in meters per second (m/s) or kilometers per hour (km/h).
Vận tốc trung bình của xe hơi trên đường cao tốc là 100 km/h.
The average speed of a car on the highway is 100 km/h.
In physics, 'vận tốc' is a vector quantity, meaning it has both magnitude (speed) and direction.
Engineering
technical
The magnitude of velocity, representing how fast an object is moving regardless of direction.
Vận tốc của máy bay khi cất cánh phải đạt tối thiểu 250 km/h.
The speed of an airplane must reach a minimum of 250 km/h for takeoff.
In engineering contexts, 'vận tốc' is often used interchangeably with 'speed' when direction is not a factor.
Collocations
Synonyms
Related Phrases
Pro Tip
Technical vs. Everyday Usage
Use 'vận tốc' in scientific or engineering contexts, but 'tốc độ' in casual conversation.
Gold Rule
Vector vs. Scalar
Remember that 'vận tốc' is a vector (includes direction), while 'tốc độ' is a scalar (only magnitude).
Word Origin
From 'vận' (movement) + 'tốc' (speed), combining to describe the rate of motion.
Usage Notes
'Vận tốc' is the technical term in physics and engineering, while 'tốc độ' is more commonly used in everyday language.
Word Breakdown
vận
movement
roottốc
speed
rootTừ Điển Việt Anh