Question

Firemen are shooting a stream of water at a burning building. A high pressure hose shoots out the water

with a speed of 25.0 m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile away. Ignore air resistance; assume the end of the hose is at ground level.

motion. Firemen adjust the angle of elevation of the hose until the water takes 3.00s to reach a building 45.0m

(a) (8 points) Find the angle of elevation of the hose,

(b) (2 points) Find the speed and acceleration of the water at the highest point in its trajectory.

(c) (8 points) How high above the ground does the water strike the building?

(d) (5 points) Sketch the y-t and vt graphs for the motion clearly identifying the initial, maximum and minimum values of the dependent variable on each graph.

Answer 1

Answer:

a) (8 points) Find the angle ofelevationof the hose