रैकेट से शटलकॉक मारिए।

Because they are borrowed words. In modern Hindi, especially in sports, English terms are very commonly used instead of older Sanskrit- or Hindi-based alternatives.

So here:

• रैकेट = racket
• शटलकॉक = shuttlecock

They are simply being written in Devanagari, the script used for Hindi.

Here से means with, in the sense of by using something.

So रैकेट से means with the racket or using the racket.

This is a very common use of से in Hindi:

• चाकू से काटिए = cut with a knife
• कलम से लिखिए = write with a pen

मारना can mean several related things, including to hit, to strike, and in some contexts to kill. The exact meaning depends on context.

In a sports sentence like this, मारना clearly means to hit/strike:

• गेंद मारना = hit the ball
• शटलकॉक मारना = hit the shuttlecock

So there is no sense of kill here.

मारिए is the polite imperative form of मारना, meaning hit or please hit.

It is the kind of form you use when speaking politely, especially with आप:

• आप मारिए = you hit / please hit

In commands and instructions, Hindi often leaves आप unstated, so just मारिए is enough.

मारिए is polite and appropriate for:

• instructions
• formal speech
• speaking respectfully
• addressing one or more people politely

Other versions include:

• मारो = informal, used with तुम
• मार = very informal, used with तू

So रैकेट से शटलकॉक मारिए sounds like a polite instruction, such as from a teacher or coach.

In Hindi imperatives, the subject is very often omitted because it is understood from the verb form.

Since मारिए is already a polite command form, the listener automatically understands an implied आप.

So:

• आप रैकेट से शटलकॉक मारिए and
• रैकेट से शटलकॉक मारिए

both work, but the shorter version is very natural.

Hindi does not always mark the direct object with को. With inanimate objects, को is often omitted unless there is a special reason to include it.

Since शटलकॉक is an inanimate thing, the plain form is very natural:

• शटलकॉक मारिए

You could sometimes hear शटलकॉक को मारिए, but here it is less natural and more marked. The version without को is the normal one.

Hindi normally puts the main verb at the end of the sentence. English usually puts the verb earlier.

So the Hindi order is roughly:

• रैकेट से = with the racket
• शटलकॉक = shuttlecock
• मारिए = hit

A very literal word-for-word order would be With the racket the shuttlecock hit, but that is just how Hindi structure works. The natural English translation is Hit the shuttlecock with the racket.

Hindi word order is flexible, but not completely free. The verb usually stays at the end, while the other parts can move somewhat for focus or emphasis.

For example, you may also hear:

• शटलकॉक रैकेट से मारिए
• शटलकॉक को रैकेट से मारिए

But रैकेट से शटलकॉक मारिए is a perfectly natural instruction. It puts the instrument first and keeps the verb at the end.

मारिए is pronounced roughly maa-ri-ye.

You may also see मारिये in informal writing. Both represent the same polite imperative form in everyday use, though मारिए is often preferred in more standard spelling.

So if you see either मारिए or मारिये, the meaning is the same here.