In a musical chair game, the person playing the music has been advised to stop playing the music at any time within 2 minutes after she starts playing. What is the probability that the music will stop within the first half-minute after starting?

Two motor cars start from A simultaneously & reach B after 2 hour. The first car travelled half the distance at a speed of v_(1)=30 km hr^(-1) & the other half at a speed of v_(2)=60 km hr^(-1) . The second car covered the entire with a constant acceleration. At what instant of time, were the speeds of both the vehicles same? Will one of them overtake the other enroute?