Question
In: Physics
A bullet weighing 0.1 lb is fired vertically downward from a stationary helicopter with a muzzle...
A bullet weighing 0.1 lb is fired vertically downward from a stationary helicopter with a muzzle velocity of 1200 ft/sec. The air resistance (in lbs) is numerically equal to 16-5v2, where v is the velocity of the bullet in ft/sec.
a)If the helicopter is 3,000 ft high, how long does it take for the bullet to hit the ground?
Solutions
genius_generous answered 7 months agoRelated Solutions
A skydiver, weighing 180 lb (including equipment) falls vertically downward from an altitude of 4000 ft...
A skydiver, weighing 180 lb (including equipment) falls
vertically downward from an altitude of 4000 ft and opens the
parachute after 10 s of free fall. Assume that the force of air
resistance, which is directed opposite to the velocity, is of
magnitude 0.75|v| when the parachute is closed and is of magnitude
10|v| when the parachute is open, where the velocity v is measured
in ft/s. (A computer algebra system is recommended. Use g = 32
ft/s2 for the...
A skydiver, weighing 180 lb (including equipment) falls vertically downward from an altitude of 4000 ft...
A skydiver, weighing 180 lb (including equipment) falls
vertically downward from an altitude of 4000 ft and opens the
parachute after 10 s of free fall. Assume that the force of air
resistance, which is directed opposite to the velocity, is of
magnitude 0.75|v| when the parachute is closed and is of magnitude
10|v| when the parachute is open, where the velocity v is measured
in ft/s. (A computer algebra system is recommended. Use g = 32
ft/s2 for the...
A bullet is fired horizontally at a stationary 7.0 kg target. The target sits on a...
A bullet is fired horizontally at a stationary 7.0 kg target.
The target sits on a frictionless horizontal
surface and is connected to a spring on the backside of the
target. The spring has a spring constant
of 5000 N/m. The 11.0 g bullet is traveling horizontally at 675
m/s the moment before it strikes
the target. After 1 ms, the bullet is embedded into the target
and begins to oscillate. Ignore air
resistance.
(a) Determine the speed of the...
Show a complete derivation of the “muzzle speed” of the bullet from the ballistic pendulum. You...
Show a complete derivation of the “muzzle speed” of the bullet
from the ballistic pendulum. You will use conservation of energy
and conservation of momentum to determine vmuzzle in terms of mB
the mass of the bullet, MP the mass of the pendulum, and h the
change in height of the combined pendulum/bullet mass after they
stick together. This will be called the “ballistic pendulum
equation”
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data. Complete parts
(a) through (d) below.
Observation 1 2 3 4 5 6
A 793.3, 791.7, 791.3, 791.4, 793.7, 790.1
B 803.1, 791.1, 800.9, 789.1, 795.2, 788.7
(b) Is there a difference in the measurements of the muzzle
velocity between device A...
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data. Complete
parts (a) through (d) below.
Observation
1
2
3
4
5
6
A
790.4
791.9
794.6
794.2
794.1
793.8
B
796.1
787.0
803.4
792.6
794.8
791.0
a) Why are these matched-pairs data?
A. Two measurements (A and B) are taken on...
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data. Complete
parts (a) through (d) below.
Observation
1
2
3
4
5
6
A
790.4
791.9
794.6
794.2
794.1
793.8
B
796.1
787.0
803.4
792.6
794.8
791.0
a) Why are these matched-pairs data?
A. Two measurements (A and B) are taken on...
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data. Complete
parts (a) through (d) below.
Observation
1
2
3
4
5
6
Open in StatCrunch
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Copy to Clipboard
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Open in Excel
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A
790.5790.5
793.9793.9
793.5793.5
790.7790.7
792.7792.7
794.3794.3
B
796.9796.9
792.0792.0
800.8800.8
789.6789.6
795.6795.6
792.8792.8
(a) Why are...
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data.
Obervation
1
2
3
4
5
6
A
791.2
790.7
793.9
793.7
794.3
793.7
B
795.1
786.0
802.5
789.8
797.5
793.1
Is there a difference in the measurement of the muzzle velocity
between device A and device B at the α=0.01 level...
The following data represent the muzzle velocity (in feet per second) of rounds fired from a...
The following data represent the muzzle velocity (in feet per
second) of rounds fired from a 155-mm gun. For each round, two
measurements of the velocity were recorded using two different
measuring devices, resulting in the following data. Complete
parts (a) through (d) below.
Observation
1
2
3
4
5
6
A
791.2791.2
791.5791.5
794.5794.5
791.5791.5
793.6793.6
793.7793.7
B
798.3798.3
787.9787.9
799.2799.2
789.6789.6
798.8798.8
793.6793.6
(a) Why are these matched-pairs data?
A.
Two measurements (A and B) are taken on...
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