Brzdová destička je v brzdě.

In Czech, this is a normal adjective + noun combination:

• brzdová = brake- / braking
• destička = pad / small plate

So brzdová destička literally means something like brake pad.

English often packs nouns together, as in brake pad, but Czech usually expresses this with an adjective: brzdová destička.

Because it has to agree with destička.

In Czech, adjectives match the noun in:

• gender
• number
• case

Here, destička is:

• feminine
• singular
• nominative (because it is the subject)

So the adjective also takes the feminine singular nominative form:

• masculine: brzdový
• feminine: brzdová
• neuter: brzdové

That is why you get brzdová destička.

Yes. Destička is related to deska, meaning board, plate, or slab depending on context.

The ending -ička often gives a sense of something smaller, so destička is literally something like small plate or little flat piece.

In technical vocabulary, though, you should usually learn it as a normal dictionary item. In this sentence, brzdová destička is simply the standard term for brake pad. Even though it looks diminutive historically, in practice it is just the usual word.

Je is the 3rd person singular form of být (to be), so it means is.

• já jsem = I am
• ty jsi = you are
• on/ona/ono je = he/she/it is

In present-tense Czech, forms of to be are usually not omitted in standard sentences like this. So:

• Brzdová destička je v brzdě. = correct
• leaving out je here would sound wrong

Czech can omit subject pronouns, but not the verb itself in this kind of sentence.

Because the preposition v (in) requires the noun to be in the locative case when it expresses location.

The basic dictionary form is:

• brzda = brake

But after v meaning in, it changes to the locative singular:

• v brzdě = in the brake

So this is a case ending issue:

• nominative: brzda
• locative singular: brzdě

This is one of the most important things to notice in Czech: prepositions often determine the case of the following noun.

Because brzda is a feminine noun of a common pattern, and in the locative singular that pattern often changes -a to -ě.

So:

• brzda → v brzdě

You will see similar changes with other feminine nouns too, though the exact endings depend on the declension pattern.

Also notice that the consonant before the ending can interact with the ending in spelling and pronunciation, so it is best to learn case forms together with prepositions:

• brzda
• bez brzdy
• k brzdě
• v brzdě

Here v means in.

Czech has two forms:

• v
• ve

They mean the same thing. Ve is used mainly when pronunciation is easier that way, especially before difficult consonant clusters.

For example:

• v brzdě
• ve škole
• ve městě

In this sentence, v brzdě is the normal form.

So the choice between v and ve is mostly about sound and ease of pronunciation, not meaning.

Yes, you could.

Czech word order is more flexible than English because case endings show grammatical roles. The basic sentence:

• Brzdová destička je v brzdě.

is a neutral way to say it.

But you can change the emphasis:

• V brzdě je brzdová destička.

This puts more focus on where it is.

So both are grammatical, but the information structure changes. English often has to keep a more fixed order, while Czech can move things around more freely for emphasis.

There is no separate word for the in Czech.

Czech has no articles, so nouns like destička and brzdě can mean:

• a brake pad
• the brake pad
• a brake
• the brake

The exact meaning depends on context.

So Brzdová destička je v brzdě can be understood as The brake pad is in the brake or A brake pad is in a/the brake, depending on the situation. In real use, context tells you which reading is intended.

It is in the nominative case because it is the subject of the sentence.

The structure is:

• Brzdová destička = subject
• je = verb
• v brzdě = prepositional phrase showing location

So:

• brzdová destička = nominative
• brzdě = locative

This is a very common pattern in Czech:

• subject in nominative
• location after v in locative

Grammatically, it is singular:

• destička = one pad
• je = is

So the sentence refers to one brake pad.

If you wanted the plural, you would need different forms, for example:

• Brzdové destičky jsou v brzdě.

Here:

• destičky = pads
• jsou = are
• brzdové changes to agree with the plural noun

So the original sentence is definitely singular.