A 9200 kg boxcar traveling at 19 m/s strikes a second boxcar at
rest. The two...
A 9200 kg boxcar traveling at 19 m/s strikes a second boxcar at
rest. The two stick together and move off with a speed of 10 m/s.
What is the mass of the second car?
A 2 kg disk traveling at 3.0 m/s strikes a 1.0 kg stick of
length 4.0 m, that is lying flat on nearly frictionless ice. The
disk strikes at the end point of the stick at a distance r=2.0 m
from the stick's center. Assume the collision is inelastic and the
disk adheres to the stick.The moment of inertia of the stick about
its center of mass is 1.33kg*m^2.
a) Does the disk have initial linear momentum?
b) Does the...
A 0.042 kg aluminum bullet traveling at 456 m/s strikes an armor
plate and comes to a stop. If all its energy is converted to heat
that is absorbed by the bullet, what is the bullet's temperature
change in degrees Celsius? (This is a multi-step problem.)
A 10 g bullet traveling at 350 m/s strikes a 9.0 kg , 1.2-m-wide
door at the edge opposite the hinge. The bullet embeds itself in
the door, causing the door to swing open. What is the angular
velocity of the door just after impact?
A 100 g bullet traveling in the x-direction at 100 m/s strikes a
1 kg wooden block at
rest. After the collision, wooden block splits into two parts [.2
kg and .8 kg] and the
bullet is observed traveling at a speed of 50 m/s in the
x-direction. Assume that the
wooden pieces are traveling in the x-y plane and the .8 kg piece is
traveling 30 degrees to the
right of the x-direction. If the kinetic energies of the...
A hockey puck of mass 0.44 kg is shot west at 2.50 m/s strikes a
second puck, initially at rest, of mass 0.50 kg. As a result of the
collision, the first puck is deflected at an angle of 31° north of
west, with a speed of 1.30 m/s. What is the speed of the second
puck after the collision?
A 1,4-kg object traveling at 5,5 m/s collides head-on with a
3-kg object traveling in the opposite direction at 3,9 m/s. If the
collision is perfectly elastic, what is the final speed of the
1,4-kg object? Answer in two decimal places. The answer is supposed
to be 7,32. Why is that?
A 10 kg ball moving at 6 m/s strikes a 5 kg ball that
is at rest, with contact of 0.5 seconds. The 10 kg ball comes to a
complete stop.
(a) What average force was exerted on the 10 kg ball?
(b) What average force was exerted on the 5 kg ball?
(c) What is the final momentum of the 5 kg ball?
(d) What is the initial momentum of the 10 kg ball?
A boxcar of length 10.1 m and height 2.4 m is at rest on
frictionless rails. Inside the boxcar (whose mass when empty is
3600 kg) a tank containing 1700 kg of water is located at the left
end. The tank is 1.0 m long and 2.4 m tall. At some point the walls
of the tank start to leak, and the water fills the floor of the
boxcar uniformly. Assume that all the water stays in the
boxcar.
A....
Ball A with a mass of 2.0 kilograms is traveling at 8.0 m/s
strikes Ball B with a mass 5.0 kilograms which is at rest. After
the collision, Ball A moves away at an angle of 40.0 degrees above
the x-axis and Ball B moves away at an angle of -20.0 degrees below
the x-axis. What are the final velocities of each ball? Draw and
label a sketch of the problem.
A 900-kg car traveling east at 20.0 m/s collides with a 750-kg
car traveling north at 15.o m/s. The cars stick together. Assume
that any otherunbalanced forces are negligible. (Draw Diagrams)
(a) What is the speed of the wreckage just after the
collision?
(b) In what directions does the wreckage move just after the
collision?
(c) What is the total Kinetick Energy before the collision?
(d) What is the total Kinetic Energy after?