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[ballistic pendulum] A 10-gram bullet is fired from a rifle at a speed of 700 m/sec into a 1.50-kg wooden block suspended by a string that is two meters long.
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[table projectile] A block having a mass of 800 grams is at rest near the edge of a frictionless table. A second block, of mass 600 grams, is sliding towards it at a speed of 4 m/sec.
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[impact collision] A block having a mass of 600 grams is sliding towards the edge of a frictionless table at a speed of 4 m/sec. On the floor, at the base of the table is a 200 gram cart, initially at rest. The table is 1 meter above the floor.
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[skid marks] A 2000-kg car moving with an unknown speed strikes a 1000-kg car that is initially at rest. After the collision, the two cars stick together and skid to a stop on asphalt, where the friction coefficient is 0.65. The police measure the skid marks to be 40 meters long.