Physics Practice Problems Projectile Motion: Positive Launch Practice Problems Solution: Firemen are shooting a stream of water at a burnin...

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Solution: Firemen are shooting a stream of water at a burning building using a high-pressure hose that shoots out the water with a speed of 25.0 m/s as it leaves the end of the hose. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation s of the hose until the water takes 3.00 m to reach a building 45.0 { m m} away. You can ignore air resistance; assume that the end of the hose is at ground level.Find the angle of elevation alpha.Find the speed of the water at the highest point in its trajectory.Find the magnitude of the acceleration of the water at the highest point in its trajectory.How high above the ground does the water strike the building?How fast is it moving just before it hits the building?

Problem

Firemen are shooting a stream of water at a burning building using a high-pressure hose that shoots out the water with a speed of 25.0 m/s as it leaves the end of the hose. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation s of the hose until the water takes 3.00 m to reach a building 45.0 away. You can ignore air resistance; assume that the end of the hose is at ground level.

Find the angle of elevation .

Find the speed of the water at the highest point in its trajectory.

Find the magnitude of the acceleration of the water at the highest point in its trajectory.

How high above the ground does the water strike the building?

How fast is it moving just before it hits the building?