Translation of "Spur" in Japanese

More money for education will spur economic growth.

教育にもっとお金をかければ経済成長に拍車がかかるだろう。

He says things on the spur of the moment.

その場限りのことを言う。

That's just a shot in the dark. How do you think you'll succeed by just acting on the spur of the moment like that?

闇夜に鉄砲じゃあるまいし、そんな場当たり的なやり方でうまくいくとは思えないよ。