The phrase "ploughing into" typically expresses a forceful impact or collision, and there are a number of synonyms that can be used to convey a similar meaning. Some alternatives might include "smashing into," "crashing into," "colliding with," "ramming into," or "barrelling into." Each of these phrases implies a sudden and forceful encounter with an object or obstacle, often resulting in damage or destruction. Other options might include "plunging into," "diving into," or "charging into," which can be used to express a sense of reckless abandon or aggressive action. Ultimately, the choice of synonym will depend on the context of the sentence and the specific tone or emphasis desired.