Task: Question Understanding
Input (English): Question: Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion? (A) ball with a mass of 5 kg (B) ball with a mass of 10 kg (C) ball with a mass of 15 kg (D) ball with a mass of 20 kg?
Output (English): different, speed., ball, require, force, stop, motion?