Question A – Physics
Two balls, stacked together as illustrated below, are released from a certain height. The ball on the bottom has a mass of 1000kg and the ball on the top has a mass of 1kg. Upon impact, the balls both have a speed of 10m/s. Assuming all collisions are elastic, what is the speed of the small ball after impact, rounded to the nearest whole number?
- All frames of reference are equal.
- The mass of the small ball is negligible compared to the mass of the big ball, or, alternatively, the mass of the large ball can be seen as infinite.
Question 2 – Logic/CS
Given that there is only one correct answer for this question, which one is the correct answer?
- Neither 2 nor 3 is the correct answer.
- Neither 3 nor 4 is the correct answer.
- Trust me, this is the correct answer.
- Neither 1 nor 2 is the correct answer.