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PHYS 101: Physics for the Life Sciences Lecture 18:
Momentum and Collisions
If m1 = m2 then
A car of mass 1800 kg is stopped at a traffic light, the car is struck from behind by a 900
kg car, they become entangled(locked together). The 900 kg car was travelling at 20 m/s
before the collision. Calculate the velocity of the entangled cars after the collision. Note:
this is a perfectly inelastic collision.