Assume that a clay model of a lion has a mass of 0.225 kg and slides on ice at a speed of 0.65 m/s. It collides another clay model, which is initially motionless and has a mass of 0.365 kg.    Both being soft clay, they naturally stick together. What is their final velocity in meters per second?

After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.9 m/s. Miranda runs after her at a velocity of +5.5 m/s and hops on the inner tube. How fast do the two of them slide across the snow together on the inner tube? Ashley's mass is 42 kg, and Miranda's is 78 kg. Ignore the mass of the inner tube and any friction between the inner tube and the snow. V02 Vol

In the game of medicine-ball-on-ice, players pass around a medicine ball while they are on ice, which can be assumed to be a frictionless surface. During a game, a 20 kg medicine ball  travelling horizontally west at 20 km/h is caught and held by a 50 kg player, who is initially at rest. What is the velocity of the player after she catches the medicine ball?

A student of mass m=45 kg runs at a velocity vi=1.54 m/s before jumping on a skateboard that is initially at rest. After jumping on the board the student has a velocity vf=1.41 m/s. What is the mass of the skateboard, in kilograms? 

Two hockey pucks slide along a flat sheet of ice with no friction, and then collide with each other. The diagram below shows a top-down view of the colliding hockey pucks. The masses of the hockey pucks are mA = 2.00 kilograms (kg) and mB = 1.50 kg. Before the collision, puck A moves to the right at a speed of 2.50 meters per second (m/s) and puck moves to the left at a speed of 1.25 m/s. After the collision, puck A moves at a speed of 1.00 m/s at 50.0 degrees relative to the x axis. (a) Find find the final speed (in m/s) of puck B after the collision.   (b) Find find the direction of travel of puck B after the collision. Give your answer as an angle in degrees, measured relative to the x axis.   (c) What is the total change in kinetic energy of the hockey pucks during the collision, in units of Joules (J)?

The mass of a regulation tennis ball is 57.0 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 30 ms. (This number can also vary, depending on the racket and swing.) We assume a 59.0 g ball and a 26.0 ms contact time in this problem. In the 2011 Davis Cup competition, Ivo Karlovic made one of the fastest recorded serves in history, which was clocked at 156 mi//h (70 m/s). Part A: What impulse did Karlovic exert on the tennis ball in his record serve? Take the +x direction to be along the final direction of motion of the ball. Part B: What average force did Karlovic exert on the tennis ball in his record serve? Part C: If his opponent returned this serve with a speed of 55.0 m/s, what impulse did his opponent exert on the ball, assuming purely horizontal motion? Take the +x direction to be in the direction the ball is traveling before it is hit by the opponent. Part D: If his opponent returned this serve with a speed of 55.0…

A student is driving a 1200 kg car at 42.0 m/s. He is tail-gating ("drafting") behind a 2500 kg truck that is going 40.0 m/s in the same direction as the car. (DON'T EVER DO THIS! IT IS EXTREMELY DANGEROUS AND ILLEGAL) The car collides with the truck and the two vehicles are stuck together. How fast are they moving after the collision?

Two otters are sliding toward each other on a muddy frictionless horizontal surface. One of them, of mass 7.5 kg, is sliding to the left at 5.0 m/s, and the other, of mass 5.75 kg, is moving to the right at 6.00 m/s. They hold fast to each other after they collide. What is the magnitude of the velocity of these otters right after they collide? O 0.116m/s 0.236m/s O 0.441m/s O 0.226m/s

A hungry 6.61 kg fish swimming at 2.37 m/s swallows a 0.69 kg fish that was swimming towards it at 2.72 m/s. What is the final speed (in m/s) of the formerly hungry fish?

A clay ball with a mass of 0.35 kg has an initial speed of 4.2 m/s traveling north. It strikes a 1.25 kg clay ball that is traveling towards the other ball at an initial speed of 1.5 m/s. The two ball stick together. What is their final velocity?