A ball weighing m = 10 kg collides with a ball weighing 4 kg. The speed of the first ball 4m/s, the second - 12 m / s. Find the total speed of the balls after impact in two cases: 1) a small ball catches up with a large ball moving in the same direction; 2) the balls move towards each other. Impact is considered direct, central, inelastic.

A completely inelastic collision occurs between two balls of wet putty that move directly toward each other along a vertical axis. Just before the collision, one ball, of mass 3.9 kg, is moving upward at 23 m/s and the other ball, of mass 1.3 kg, is moving downward at 14 m/s. How high do the combined two balls of putty rise above the collision point? (Neglect air drag.)

A bumper car A (ma = 140 kg) with a velocity of 15 km/h hits a another car B (mb = 160 kg) which was immobile before impact. The collision is perfectly elastic and the frictions are considered negligible. Calculate the time at which the dodgems are 2 m apart from each other after the collision.During a squash game, a player hits the ball, of 24 g, which is moving toward him horizontally at 150 km/h. The impact between the racket and the ball lasts 1.2 ms and the ball leaves with an identical speed but in the opposite direction as the initial velocity. The ball then hits the wall in front, 8 m away and 18 cm below the height of the hit. What is the average force acting on the ball during the impact?

In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0235 kg and the mass of the pendulum is 0.250 kg, how high ℎ will the pendulum swing if the marble has an initial speed of 5.95 m/s? Assume that the mass of the pendulum is concentrated at its end so that linear momentum is conserved during this collision.