Question

A 0.46 kg clay disk is fired at an angle of 22º to the horizontal with an initial speed of v0 = 38.2 m / s. When he reaches maximum height h, he is hit from below by a 15.8 g bullet that travels vertically upward with a speed of 228 m / s. The bullet is embedded in the disc. Calculate the additional displacement Δx that you will reach from being hit by the bullet.

Answer #1

PROBLEM A long jumper (see figure) leaves the
ground at an angle of 20.0°to the horizontal and at a speed of 11.0
m/s. (a) How long does it take for him to reach
maximum height? (b) What is the maximum height?
(c) How far does he jump? (Assume his motion is
equivalent to that of a particle, disregarding the motion of his
arms and legs.) (d) Use the proper equation to
find the maximum height he reaches.
STRATEGY Again, we...

A projectile is fired from ground level at an angle of 60° above
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instantaneous velocity at
(a) the moment it is fired,
(b) the moment it reaches its maximum height, and
(c) the moment before it hits the ground?

2. In a “ballistic pendulum,” the bullet is fired at a massive
pendulum bob that is hanging straight downward at rest. The bullet
embeds itself in the bob, and the bob+bullet together swing up to
some maximum height before pausing to swing back downward.
a.) If the bullet has a mass of 30. g, the bob’s mass is 5.0 kg,
and the bob+bullet reaches a final height of 50. cm after impact,
what is the speed of the bullet just...

A
100 gram bullet is fired at an angle of 75 degrees above the the
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60 m/s. Assume no air resistance acts on the bullet and take zero
gravitational potential energy to be at ground level.
A) What is the height of the bullet, measured above the
ground, when 40% of the bullet’s total energy is kinetic
energy?
B) What is the greatest amount of gravitational...

A bullet of mass 9.00 g is fired into a ballistic pendulum of
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Compute...
(a) the kinetic energy of bullet and pendulum after the bullet
is embedded in the pendulum before it has risen. J?
(b) the initial momentum of the bullet. kg·m/s ?
(c) the initial speed of the bullet. m/s

1. A o.5 kg stone moving at 4m/s overtakes a 4kg lump of
clay moving at 1m/s. The stone becomes embedded in the
clay.
A) What is the speed of the composite bodyafter the
collision?
B) How much kinetic energy was lost?
2. Three balls
are thrown simultaneously at the same speed from a roof. Ball A is
thrown vertically upward, ball B is thrown horizontally, ball C is
thrown vertically downward.
A) Do the
balls reach the ground at...

A 100-g bullet is fired horizontally into a 14.9-kg block of
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that 8.50 ms collision?

A 4 kg mortar shell is fired at an angle of 60° above the
horizontal with an initial speed of v0. At its highest point its
speed is 120 m/s. (a) At this highest point, what is the change in
its gravitational potential energy relative to its initial launch
position? Neglect air resistance? (b) How far above the launch
point did the mortar travel to get to its highest point? Neglect
air resistance

A canon ball fired with speed v0 = 55.0 m/s at an angle θ =
25.0◦ hits a wall that is x = 152 m away. Calculate
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A projectile is fired from ground level at an angle of 65 ∘
above the horizontal with an initial speed of 29 m/s .
What is the magnitude of its instantaneous velocity at the
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instantaneous velocity at the moment it is fired?
What is the magnitude of its instantaneous velocity the moment
it reaches its maximum height?
What is the direction (relative to horizontal) of its
instantaneous...

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