Project #52706 - Projectile motion

  1. A ball is launched into the air at an angle of 32.0 o with an initial speed of 18.0 m/s. Neglecting air resistance, determine how long the ball will be in the air ?
  2. A rock is launched from the ground into the air. After 1.40 seconds the rock is observed to have a speed of 22.0 m/s at an angle +18.0 o above horizontal. Neglecting air resistance, with what speed was the rock launched ?
  3. A ball is tossed into the air at a speed of 64.0 m/s at an unknown angle. If the ball is observed to rise to a maximum height of 7.80 m, at what angle was the ball thrown relative to the ground ?
  4. An object is launched from the ground into the air at an angle of 38.0 o (above the horizon) towards a vertical brick wall that is 15.0 m horizontally from the launch point. If the ball takes 1.30 seconds to collide with the wall, with what speed was the ball launched ?

Subject Science
Due By (Pacific Time) 01/06/2015 12:00 am
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