Recent content by scalar

  1. S

    How could spring water lift a person?

    aha, just as dave said, I'm discussing the posibility of the advertisement. And the method I used is the same as Andrew's. The velocity of the spring water at the ground is about 10m/s. Thank you all.
  2. S

    What Happens When a Projectile Is Fired Opposite to a Moving Car?

    it seems that password is needed.
  3. S

    How could spring water lift a person?

    In an TV advertisement, a young man was lifted by an artificial spring water to a hight about 4 m. Supposed the man's weight is 800N, and the sectional area of the spring water is 0.2*0.2 m^2, and using the impuse-momentum theorem, I got a velocity of the spring water of 4m/s. Is this correct?
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