# Posts by Ritzi

Total # Posts: 3

**Physics**

PLEASE HELP. a 1000 kg car is coasting down the highway at 20 m/s. How much work do friction and air resistance do in bringing the car to rest?

**Physics**

two cars of equal mass with equal speeds traveling perpendicular to one another collide completely inelastically. what percentage of the cars' total energy is lost in the collision?

**Physics**

two cars of equal mass with equal speeds traveling perpendicular to one another collide completely in elastically. what percentage of the cars' total energy is lost in the collision?

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