Recent content by KEVIN Phlem

  1. K

    What Must Be the Length of the New Runway?

    Homework Statement A certain airport runway of length L allows planes to accelerate uniformly from rest to takeoff speed using the full length of the runway. Because of newly designed planes, the takeoff speed must be doubled, again using the full length of the runway and having the same...
  2. K

    Projectile motion of a fired cannon ball

    The first one.
  3. K

    Projectile motion of a fired cannon ball

    100 m/s, sorry
  4. K

    Projectile motion of a fired cannon ball

    1. A cannonball is fired toward a vertical building 400 m away with an initial velocity of at 36.9° above the horizontal. The ball will hit the building in A. 4.0 s. B. 5.0 s. C. less than 4.0 s. D. more than 5.0 s. 2. If the cannonball in the previous question is fired horizontally from a...