Centripetal force, an Uncommon card

The card carries these facts from its Wikipedia article.

• The direction of the centripetal force is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path.
• Isaac Newton coined the term, describing it as "a force by which bodies are drawn or impelled, or in any way tend, towards a point as to a centre".
• In Newtonian mechanics, gravity provides the centripetal force causing astronomical orbits.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Centripetal force article was read about 110,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 78 and blocks with 68: each hit it takes is cut by 27 %.

Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.

The cards just above and just below Centripetal force in the power ranking, all domains together.