1. A stone is thrown horizontally outward from the top of a bridge. The stone is
released 19.6 m above the street below. The initial velocity of the stone is 5.0
m/s. Determine the: a.) total time that the stone is in the air, and
b.) magnitude of the velocity of the stone just before it strikes the street.
Given:
Required:
Solution:
2. A firefighter hose must be fired from a distance because of some obstacles. If
the water’s velocity is 30 m/s angled 45 degrees reaches the source of the fire
in 3.5 s, how far is the firefighter from the fire?
Given:
Required:
Solution:
#NEED SOLUTION
released 19.6 m above the street below. The initial velocity of the stone is 5.0
m/s. Determine the: a.) total time that the stone is in the air, and
b.) magnitude of the velocity of the stone just before it strikes the street.
Given:
Required:
Solution:
2. A firefighter hose must be fired from a distance because of some obstacles. If
the water’s velocity is 30 m/s angled 45 degrees reaches the source of the fire
in 3.5 s, how far is the firefighter from the fire?
Given:
Required:
Solution:
#NEED SOLUTION
Answers & Comments
Answer:
1.a.2 seconds
b.20.23m/s at 75.69°
2. the firefighter is 74.24 meter away from the fire.
Explanation:
•Projectile motion is a form of motion experienced by a launched object. Ballistics is the science of dynamics that deals with the flight, behavior and effects of projectiles, especially bullets, unguided
•using this theorem, we can answer all given questions.
1.
givens:
Vox=5m/s
dy=19.6
A.
B.
Therefore,
The magnitude of the stone when it hits the ground is 20.23 m/s at an angle of 75.69°.
2.
θ=45°
t=3.5 seconds
Calculating the range assuming it is the distance of the firefighter from the fire,
Therefore,
The firefighter is 74.24 meter away from fire.
#keeplearningatphysics
#physicsiseasy
#brainliestanswer