pdf Worksheet 2 - Chp 9 - 1D collision - PHY 251.pdf

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Worksheet 2 - Chp 9 - 1D Collisions - PHY 251 1. A 1 200 kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the back of a 9 000 kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east. (a) What is the velocity of the truck right after the collision? (b) What is the change in mechanical energy of the car truck system in the collision? (c) Account for this change in mechanical energy. 2. Two blocks are free to slide along the frictionless wooden track. The block of mass m 1 = 5.00 kg is released from the position shown, at height h = 5.00 m above the flat part of the track.
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