at which speed

USAGE SUMMARY

The phrase "at which speed" is correct and usable in written English.
It can be used when discussing the rate of movement or the velocity at which something occurs. Example: "The car was traveling at which speed made it difficult to control during the sharp turn."

✓ Grammatically correct

Science

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

4 human-written examples

∑ is the number of orientations at which speed is evaluated.

EURASIP Journal on Advances in Signal Processing

The solar wind had a velocity at the time of about, at which speed it would have taken eight days for the tail to be carried out to where the spacecraft was situated at 3.73 AU, approximately 45 degrees out of the ecliptic plane.

Wikipedia

However, only 3 of 7 females could sustain 0.83 m s−1, at which speed one individual was still walking.

Biology Open

The data comprised dated injury records referenced by street segment and dates at which speed restrictions were imposed.

BMC Medical Research Methodology

Human-verified similar examples from authoritative sources

Similar Expressions

55 human-written examples

You hopefully made some tests earlier to figure out at which speeds you are able to hand-hold a lens of a certain focal length (if not, make some now!).

WikiHow

The ship directed an Aldis lamp at the boats, which sped off.

The Guardian

Previously, voting occurred at precinct level which sped things up a bit.

The New York Times

It is a ballad, slow at the beginning which speeds up towards the end.

Wikipedia

That will limit the rate at which processing speeds increase.

The New York Times - Tech

Over the last few decades, chips have followed a relatively reliable pattern in which their transistors shrink, which allows the speed at which they run to speed up.

Forbes

For a given level of muscle activation there exists a frequency at which the maximum speed is attained.

Biology Open

Expert writing Tips

Best practice

Consider using simpler alternatives like "at what speed" or "how fast" for more concise writing, especially in informal contexts.

Common error

Avoid using "at which speed" when a more direct question like "how fast" would suffice. Clarity is key.

Linguistic Context

The phrase "at which speed" functions as a prepositional phrase modifying a verb or noun, indicating the velocity or rate of an action or event. Ludwig confirms that it is grammatically correct.

Expression frequency: Rare

Frequent in

News & Media

30%

Science

30%

Wiki

20%

Less common in

Formal & Business

10%

Encyclopedias

5%

Reference

5%

Ludwig's WRAP-UP

In summary, the phrase "at which speed" is grammatically sound and can be used to specify the velocity or rate of an action. However, Ludwig indicates that simpler alternatives like "how fast" or "at what speed" are often preferred for clarity and conciseness, especially in informal settings. While acceptable in formal contexts, remember that clarity should always be prioritized. Ludwig's analysis of various sources highlights that the phrase appears more frequently in news, scientific, and wiki contexts.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

at what rate

Replaces "speed" with "rate", emphasizing the measure of change over time.

at what velocity

Substitutes "speed" with "velocity", specifying the rate of change of position with respect to time.

at the rate of

Uses a more common prepositional phrase structure.

at the velocity of

Uses 'velocity' instead of 'speed', highlighting a directional rate of movement.

at a certain speed

Indicates a particular, though unspecified, speed.

at which pace

Replaces 'speed' with 'pace', indicating a rate or tempo of movement.

with what pace

Employs "pace" instead of "speed", focusing on the rhythm or tempo.

at a rapid speed

Adds the adjective 'rapid' to emphasize the quickness of the movement.

how fast

Simplifies the expression to a direct question of velocity.

at the quickness of

Changes the noun to 'quickness', focusing on the quality of being fast.

FAQs

How can I use "at which speed" in a sentence?

Use "at which speed" to describe or inquire about the rate of movement or progression. For example, "The car was traveling at which speed it was difficult to control."

What's a simpler way to say "at which speed"?

You can use phrases like "how fast" or "at what speed" for more direct and concise phrasing.

Is it better to use "at which speed" or "at what speed"?

"At what speed" is generally preferred in modern English for its directness. "At which speed" is grammatically correct but can sound somewhat formal or archaic.

When is it appropriate to use "at which speed" instead of "how fast"?

Use "at which speed" when you want to maintain a more formal or technical tone. In casual conversation, "how fast" is typically more appropriate.