More Projectile Motion - CP

  1. A football is kicked at ground level with a speed of 18.0 m/s at an angle of 35.0 o to the horizontal.
  2. Draw and label the picture.
  3. Look in the y-direction and calculate how long (t) the football is in the air?
  1. A tiger leaps horizontally from a 6.5 m high rock with a speed of 3.5 m/s. How far from the base of the rock will she land?
  2. Draw the picture.
  3. Label what we know in the y-direction. Solve for time (hint: If the tiger is moving only horizontally, x-direction, in the beginning, how fast is the tiger moving vertically, y-direction?)
  1. Label what we know in the x-direction. Solve for distance. (REMEMBER: x-direction velocity is constant velocity. Therefore acceleration = 0)
  1. A pilot of an airplane traveling 50.0 m/s wants to drop supplies to flood victims isolated on a patch of land 160 m below.
  2. Draw and label the picture.
  3. The supplies should be dropped how many seconds before the plane is directly overhead. (Hint: look in the y-direction for this)
  1. How far, horizontally is the plane from the victims when the supplies are dropped? (hint: look in the x-direction)
  1. A golf ball is hit off the tee with an initial velocity of 30.0 m/s at an angle of 35o to the horizontal. The hole is 75 m away from the tee and on top of a cliff.
  2. Draw and label the picture.
  3. Look in the x-direction and calculate how long it takes the ball to reach the hole?
  1. Look in the y-direction and determine the height of the cliff?
  1. A fireman 50.0 m away from a burning building directs a stream of water from a ground level fire hose at an angle of 30.0 o above the horizontal. The speed of the water out of the hose is 40.0 m/s.
  2. Draw and label the picture.
  3. Look in the x-direction and determine how long it takes the water to hit the building.
  1. Look in the y-direction and calculate at what height will the stream of water hit the building
  1. After a snow storm, a boy and a girl decide to have a snowball fight. The girl uses a large slingshot to shoot snowballs at the boy. Assume that the girl fires each snowball at an angle  from the ground and that the snowballs travel with an initial velocity of 5.0 m/s.
  2. Draw and label the picture.
  3. Look in the y-direction and calculate the amount of time it will take a snowball travelto reach its maximum height above the ground? (remember: vf = 0 when an object reaches its maximum height.)
  1. What is the maximum height, dy, above the ground that a snowball reaches after it has been launched?
  1. What is the horizontal distance, dx, the snowball has traveled when it reaches the maximum height?
  1. What is the snowball’s total range?