1-D/Horizontally Launched Projectiles 1. A student throws his/her physics teacher off a 120 m high bridge with an initial downward speed of 10 m/s. a. How long does it take for the teacher to hit the ground below? b. How fast is the teacher going at the moment of impact? 2. Given the following situation of a marble in motion on a rail v = 10. m/s a. Sketch the trajectory showing the motion of the marble after it leaves the rail. You may show both horizontal and vertical velocity vectors. h = 1.5 m b. Determine the horizontal range of the marble as it falls to the floor. Explain your method for solving this problem. 3. The movie "The Gods Must Be Crazy" begins with a pilot dropping a bottle out of an airplane. It is recovered by a surprised native below, who thinks it is a message from the gods. If the plane from which the bottle was dropped was flying at a height of 500m, and the bottle lands 400m horizontally from the initial dropping point, how fast was the plane flying when the bottle was released? 4. A boy tosses a piece of granite into the water below from a bridge. If he throws the granite horizontally with a velocity of 3.0 m/s, and it strikes the water 4.5 m away, how high above the water is the bridge