Could someone give me a hand with these questions (from fitzpatrick):
17. A stone is thrown so that it will hit a bird at the top of a pole. However at the instant the stone is thrown, the bird flies away in a horizontal straight line at a speed of 10m/s. The stone reaches a height double that of the pole and, in its descent, touches the bird. Find the horizontal component of the velocity of the stone. (12.1m/s)
24. Find the speed and direction of a particle which, when projected from a point 15m above the horizontal ground, just clears the top of a wall 26.25m high and 30m away. (25m/s and 36 degrees 52 minutes)
Question 24 just seems as though its missing a value or something (obviously not) and 17 I dont really have much of an idea.
So some guidance or working would be appreciated.
17. A stone is thrown so that it will hit a bird at the top of a pole. However at the instant the stone is thrown, the bird flies away in a horizontal straight line at a speed of 10m/s. The stone reaches a height double that of the pole and, in its descent, touches the bird. Find the horizontal component of the velocity of the stone. (12.1m/s)
24. Find the speed and direction of a particle which, when projected from a point 15m above the horizontal ground, just clears the top of a wall 26.25m high and 30m away. (25m/s and 36 degrees 52 minutes)
Question 24 just seems as though its missing a value or something (obviously not) and 17 I dont really have much of an idea.
So some guidance or working would be appreciated.