Part A 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 a of the hose until the water takes 3.00 s to reach a building 45.0 m away. You can ignore air resistance; assume that the end of the hose is at ground level. Find the angle of elevation a. a = Submit Request Answer Part B Find the speed of the water at the highest point in its trajectory. v = m/s Submit Request Answer Part C Find the magnitude of the acceleration of the water at the highest point in its trajectory. Πν ΑΣφ ? a = m/s?

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<Projectile Motion
Exercise 3.20
Part A
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 a of the hose until the water takes 3.00 s to reach a building
45.0 m away. You can ignore air resistance; assume that the end of
the hose is at ground level.
Find the angle of elevation a.
?
a =
Submit
Request Answer
Part B
Find the speed of the water at the highest point in its trajectory.
?
v =
m/s
Submit
Request Answer
Part C
Find the magnitude of the acceleration of the water at the highest point in its trajectory.
Hν ΑΣφ
?
a =
m/s?
P Pearson
圓
Transcribed Image Text:<Projectile Motion Exercise 3.20 Part A 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 a of the hose until the water takes 3.00 s to reach a building 45.0 m away. You can ignore air resistance; assume that the end of the hose is at ground level. Find the angle of elevation a. ? a = Submit Request Answer Part B Find the speed of the water at the highest point in its trajectory. ? v = m/s Submit Request Answer Part C Find the magnitude of the acceleration of the water at the highest point in its trajectory. Hν ΑΣφ ? a = m/s? P Pearson 圓
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 a of the hose until the water takes 3.00 s to reach a building
45.0 m away. You can ignore air resistance; assume that the end of
the hose is at ground level.
a =
m/s?
Submit
Request Answer
Part D
How high above the ground does the water strike the building?
?
y =
Submit
Request Answer
Part E
How fast is it moving just before it hits the building?
?
v =
m/s
Submit
Request Answer
Transcribed Image Text: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 a of the hose until the water takes 3.00 s to reach a building 45.0 m away. You can ignore air resistance; assume that the end of the hose is at ground level. a = m/s? Submit Request Answer Part D How high above the ground does the water strike the building? ? y = Submit Request Answer Part E How fast is it moving just before it hits the building? ? v = m/s Submit Request Answer
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