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About Peekay

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    Junior Member
  1. A Child and a Staircase

    Not only did I miss something, I missed a lot - combinations of the 2 step options! The actual ways would be much more.
  2. How long will it take?

    The problem states that "At 12:00pm the pool is half covered by the shade of a tree" and again later states that "It can be assumed that the shade covers half the pool at 12:30". Is the pool HALF covered by the shade at 12:00 or 12:30? Please clarify.
  3. A question of weightlessness

    I agree. We have to differentiate between the weight (non-contact force due to gravitational attraction) and the feeling of weightlessness (contact force from normal reaction). So, while the person will have a weight he will feel weightless similar to when you have a free fall in an amusement park ride.