Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.35 kg and a speed of 1.2 m/s. Cart 2 has a mass of 0.61 kg. (a) What speed must cart 2 have if the total momentum of the system is to be zero? (b) Since the momentum of the system is zero, does it follow that the kinetic energy of the system is also zero? (c)Verify your answer to part (b) by calculating the systems kinetic energy.

*Centrifugal Force only present in noninertial reference frames* *Kinetic Friction implies “sliding” not rolling or walking, these involve static friction v 2 EQUATION μ s rg *only or pecific situations hen the static frict he centripetal acceleration* Circular Motion Problems Draw f ree body diagram What f orce is point oward the center F a v2 = ω r net c r Nonuniform Circular M otion Changing tangential velocity dω Angular acceleration α = dt Tangential cceleration at= rα v = rω