Physics, 31.01.2021 06:00 michello3

A cart of mass m = 0.12 kg moves with a speed v = 0.45 m/s on a frictionless air track and collides with an identical cart that is stationary. The carts stick together after the collision. What is the final kinetic energy of the system?

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A cart of mass m = 0.12 kg moves with a speed v = 0.45 m/s on a frictionless air track and collides...