The figure shows a device that can be used to measure the speed of a bullet....
The figure shows a device that can be used to measure the speed of a bullet. The device consists of two rotating disks, separated by a distance of d = 0.756 m, and rotating with an angular speed of 86.1 rad/s. The bullet first passes through the left disk and then through the right disk. It is found that the angular displacement between the two bullet holes is = 0.177 rad. From these data, determine the speed of the bullet.
I got 36.77 m/s but that doesn't sound right.
Homework Answers
Traveled time of bullet, t = d/v = 0.756/v ..... (1)
Also,
t = theta/w = 0.177/86.1 = 0.002056 sec ..... (2)
Equating both times,
0.002056 = 0.756/v
Velocity, v = 367.75 m/s
Comment in case any doubt please rate my answer...
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The figure shows a device that can be used to measure the speed
of a bullet....
The speed of a moving bullet can be determined by allowing the bullet to pass through...
The speed of a moving bullet can be determined by allowing the
bullet to pass through two rotating paper disks mounted a distance
70 cm apart on the same axle. From the angular displacement 37.5 ◦
of the two bullet holes in the disks and the rotational speed 610
rev/min of the disks, we can determine the speed of the bullet.
What is the speed of the bullet? Answer in units of m/s.
37.5° 610 rev/min トーーー70 cm
The speed of a moving bullet can be deter- mined by allowing the bullet to pass...
The speed of a moving bullet can be deter- mined by allowing the bullet to pass through two rotating paper disks mounted a distance 65 cm apart on the same axle. From the angular displacement 38.6 of the two bul- let holes in the disks and the rotational speed 1240 rev/min of the disks, we can determine the speed of the bullet. 38.6 0 凞凞 240 rev/mir 65 cm What is the speed of the bullet? Answer in units of...
The speed of a moving bullet can be determined by allowing the bullet to pass through...
The speed of a moving bullet can be determined by allowing the
bullet to pass through two rotating paper disks mounted a distance
d apart on the same axle. From the angular displacement of the two bullet holes in the disks
and the rotational speed of the disks, we can determine the speed v
of the bullet. Find the bullet speed for the following data: d =
80, = 900 rev/min, and = 31 degrees.
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The speed of a moving bullet can be determined by allowing the
bullet to pass through two rotating paper disks mounted a distance
70 cm apart on the same axle. From the angular displacement 37.5 ◦
of the two bullet holes in the disks and the rotational speed 610
rev/min of the disks, we can determine the speed of the bullet.
What is the speed of the bullet? Answer in units of m/s.
37.5° 610 rev/min トーーー70 cm
The speed of a moving bullet can be deter- mined by allowing the bullet to pass through two rotating paper disks mounted a distance 65 cm apart on the same axle. From the angular displacement 38.6 of the two bul- let holes in the disks and the rotational speed 1240 rev/min of the disks, we can determine the speed of the bullet. 38.6 0 凞凞 240 rev/mir 65 cm What is the speed of the bullet? Answer in units of...
The speed of a moving bullet can be determined by allowing the
bullet to pass through two rotating paper disks mounted a distance
d apart on the same axle. From the angular displacement of the two bullet holes in the disks
and the rotational speed of the disks, we can determine the speed v
of the bullet. Find the bullet speed for the following data: d =
80, = 900 rev/min, and = 31 degrees.
what is the speed of the bullet?
006 10.0 points e The speed of a moving bullet can be deter- e mined by allowing the bullet to pass through two rotating paper disks mounted a distance 93 cm apart on the same axle. From the t angular displacement 37° of the two bullet holes in the disks and the rotational speed 1098 rev/min of the disks, we can determine the speed of the bullet
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Explanation please
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Review Learning Goal: To practice Problem-Solving Strategy 4.1 for projectile motion problems. A rock thrown with speed 12.0 m/s and launch angle 30.0° (above the horizontal) travels a horizontal distance of d 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s for the free-fall acceleration. Find the height y, from which the rock was launched. Express your answer in meters to three significant figures. View Available Hint(s) Review Peregrine...
please i need help i tried to solve these but they
came out wrong
001 10.0 points A car accelerates uniformly from rest and reaches a speed of 21 m/s in 11.5 s. The diameter of a tire is 73 cm Find the number of revolutions the tire makes during this motion, assuming no slip- ping. nswer in units of rev 006 10.0 points The speed of a moving bullet can be deter- mined by allowing the bullet to pass...
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