Question

A 0.005 kg bullet traveling horizontally with speed 1.00 x
10^{3} m/s strikes an 18.0-kg door, embedding itself 10.0
cm from the side opposite the hinges. The 1.00 m wide door is free
to swing on its frictionless hinges.

A) What is the bullet’s initial angular momentum relative to the door’s axis of rotation?

B)At what angular speed does the door swing open immediately after the collision?

Answer #1

A 0.00400-kg bullet traveling horizontally with speed 1.00 103
m/s strikes a 20.0-kg door, embedding itself 10.9 cm from the side
opposite the hinges as shown in the figure below. The 1.00-m wide
door is free to swing on its frictionless hinges. (a) Before it
hits the door, does the bullet have angular momentum relative the
door's axis of rotation? Yes No (b) If so, evaluate this angular
momentum. (If not, enter zero.) kg · m2/s If not, explain why...

A 0.00400-kg bullet traveling horizontally with speed 1.00 103
m/s strikes a 17.7-kg door, embedding itself 10.2 cm from the side
opposite the hinges as shown in the figure below. The 1.00-m wide
door is free to swing on its frictionless hinges. (a) Before it
hits the door, does the bullet have angular momentum relative the
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momentum. (If not, enter zero.) kg · m2/s If not, explain why...

A 0.00600 kg bullet traveling horizontally with speed 1.00
103 m/s strikes a 21.4 kg door, embedding itself 11.3 cm
from the side opposite the hinges as shown in the figure below. The
1.00 m wide door is free to swing on its frictionless hinges.
A door shown from above such that its hinge is on the top side
of the figure with the door going down. A bullet is traveling
horizontally to the right towards the door on the...

A 10 g bullet traveling at 370 m/sm/s strikes a 14 kg ,
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itself in the door, causing the door to swing open.
What is the angular velocity of the door just after impact?
Express your answer to two significant figures and include the
appropriate units.

A 10.0 kg uniform, a disk-shaped wooden door (radius 0.500 m)
hangs vertically and can rotate freely about an axis that passes
through its rim. A 0.020-kg bullet shot horizontally with a speed
of 375 m/s, hits, and embeds itself in the door at a point
diametrically opposed to the pivot point of the door.
What is the angular speed of the door after the collision? (You
can neglect the mass of the bullet after the collision.)
After the collision,...

A 2.50 g bullet, traveling at a speed of 460 m/s, strikes the
wooden block of a ballistic pendulum, such as that in the figure
below. The block has a mass of 270 g.
(a) Find the speed of the bullet/block combination immediately
after the collision.
(b) How high does the combination rise above its initial
position?

A
12-g bullet moving horizontally with speed of 350 m/s strikes and
remains in a 4.0-kg block initially at rest on the edge of a table.
The block, which is initially 80 cm above the floor, strikes the
floor a horizontal distance from the base of table. What is the
horizontal distance on the floor?

A 0.0200 kg bullet moving horizontally at 400 m/s embeds itself
into an initially stationary 0.500 kg block.
(a) What is their velocity just after the collision? m/s
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surface with a 0.30 kinetic coefficient of friction. Now what is
its velocity? m/s
(c) The bullet-embedded block now strikes and sticks to a
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(a) What is their velocity just after the collision? m/s
(b) The bullet-embedded block slides 8.0 m on a horizontal
surface with a 0.30 kinetic coefficient of friction. Now what is
its velocity? m/s
(c) The bullet-embedded block now strikes and sticks to a
stationary 2.00 kg block. How far does this combination travel
before stopping? m

A 6.03-g bullet is fired horizontally at a speed of 662 m/s
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on a frictionless surface and is moving toward the bullet at a
speed of 2.68 m/s. The bullet passes through the block and the
block's speed is reduced to 1.98 m/s. With what speed does the
bullet emerge from the other side of the block?

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