Billy-do-right sees an elephant dart into the road 75m ahead of his car while driving 23.6m/a. he slams on the brakes, which accelerates the car at -6.3m/s. will he be able to avoid hitting the elephant

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.