Question

In: Physics

A 2000kg large boxcar that rolls without friction is sitting at rest. It is shot by...

A 2000kg large boxcar that rolls without friction is sitting at rest. It is shot by a 20kg cannonball traveling 150m/s. What will the final velocity of the boxcar be in the following situations? a.) The cannon ball breaks through the boxcar walls and continues forward at 50m/s. b.) The cannonball breaks through one wall of the boxcar and then gets stuck inside the car. c.) The cannonball bounces off the boxcar wall rebounding with a reverse velocity of -50m/s. d.) Qualitatively explain why the boxcar ought to have the least speed when the cannonball passes through it and the most speed when the ball bounces?

Solutions

Expert Solution


Related Solutions

A, A thin cylindrical shell is released from rest and rolls without slipping down an inclined...
A, A thin cylindrical shell is released from rest and rolls without slipping down an inclined ramp, a distance s, that makes an angle of θ with the horizontal. If the coefficient of friction is µK, what is the speed at the bottom of the ramp? 2, A force P pushes a block at an angle 30° from the vertical across the ceiling. There is a coefficient of kinetic friction, µk. What is the acceleration?
A sled slides without friction down a small, ice-covered hill. If the sled starts from rest...
A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom is 8.20 m/s. (a) On a second run, the sled starts with a speed of 2.80 m/s at the top. When it reaches the bottom of the hill, is its speed 11.0 m/s, more than 11.0 m/s, or less than 11.0 m/s? more than 11.0 m/s equal to 11.0 m/s less than 11.0...
A boxcar of length 10.1 m and height 2.4 m is at rest on frictionless rails....
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....
A mass (10 kg) is sitting on a table. The coefficients of static friction (.5) and...
A mass (10 kg) is sitting on a table. The coefficients of static friction (.5) and kinetic friction (.2). A chain is attached to the box, frictionless, and is attached to a pulley at the end of the surface and a ball(5kg)is attached to the hanging end of the rope. The system is released from rest. Write the equations that correspond to each mass. Determine the magnitude of the acceleration of the boxes.
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the...
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 98.9 kg. The mass of the rock is 0.291 kg. Initially the wagon is rolling forward at a speed of 0.490 m/s. Then the person throws the rock with a speed of 16.1 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the...
A student sitting at rest on a chair that is free to rotate holds a spinning...
A student sitting at rest on a chair that is free to rotate holds a spinning bicycle wheel that rotates in the horizontal plane, shown in a). When the student flips the bicycle wheel over, as shown in b), he will  Prompt for the question...  spin in the same direction as the flipped bicycle wheel.  spin in the opposite direction as the flipped bicycle wheel.  not spin at all.
Consider the velocity the satellite ( 125 kg) has while sitting on and at rest with...
Consider the velocity the satellite ( 125 kg) has while sitting on and at rest with respect to the surface of the earth. Assume a latitude of 28.5 degrees N. Calculate the velocity the satellite has while on the earth's surface due to the rotation of the earth and how much additional velocity must be given to the satellite to reach orbit? this problem doesn't provide any more information, he didn't provide the radius of an orbit, that's why I'm...
A ball rolls down a hill from rest and collides with a block on wheels at...
A ball rolls down a hill from rest and collides with a block on wheels at the bottom. The block has a mass which is 4 times larger than the mass of the ball. Calculate the direction and velocity of the block and ball after the collision, if they were (a) elastic, or (b) perfectly inelastic. Please show the answers in terms of g and h. (c) how much of the kinetic energy is lost in the elastic collision of...
A man stands at the center of a platform that rotates without friction with an angular...
A man stands at the center of a platform that rotates without friction with an angular speed of 2.46 rev/s. His arms are outstretched, and he holds a heavy weight in each hand. The moment of inertia of the man, the extended weights, and the platform is 14 kg*m^2. When the man pulls the weights inward toward his body, the moment of inertia decreases to 5.1 kg*m^2. a) What is the resulting angular speed of the platform? b) What is...
A bowling ball rolls without slipping up a ramp. If the speed at the bottom of...
A bowling ball rolls without slipping up a ramp. If the speed at the bottom of the ramp is 2.85 m/s and the height of the ramp is 0.525 m, what is the speed of the ball at the top of the ramp?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT