Which of the following could be a step in a plan designed to mitigate the negative impacts of a natural hazard? i. design new technologies to protect people when a natural hazard occurs ii. prevent natural hazards, such as tornadoes and earthquakes, from occurring iii. design new technologies to monitor and predict natural hazards iv. design warning and evacuation systems

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.