Question

1. A fireman is at ground level and 33.5m away from a burning building. He directs a stream of water from a hose at an angle of 27.2^o above the horizon, where the speed of the water is 32.9m/s. (a) Assuming that air resistance is negligible, at what height does the water strike the building? (b) How long does it take the water to strike the building after it leaves the hose?

2. A cannon is on a city wall 27.2m above the ground. It shoots a projectile at an angle of 18.5^o above the horizon, where the magnitude of the initial velocity is 67.3m/s. (a) Assuming the ground is perfectly level, how far does the projectile travel in the horizontal direction before impact? (b) What is the magnitude of the final velocity?

Answer 1