YOU SAID:

an object in motion will stay in motion, unless stopped by an opposing force

INTO JAPANESE

運動中の身体は　外部の力が 作用していない限り留まる この場合は前歯

BACK INTO ENGLISH

A body in motion stays in motion unless acted upon by an outside force. In this case, the C-1.

INTO JAPANESE

運動中の身体は　外部の力が 作用していない限り留まる この場合は前歯

BACK INTO ENGLISH

A body in motion stays in motion unless acted upon by an outside force. In this case, the C-1.