Please help.... I need help with this 2 physics questions...thanks in advance.. 1. A car can negotiate an unbanked curve safely at a certain maximum speed when the coefficient of static friction between the tires and the ground is 0.946. At what angle should the same curve be banked for the car to negotiate the curve safely at the same maximum speed without relying on friction? 2. A satellite is in a circular earth orbit that has a radius of 7.63 x 106 m. A model airplane is flying on a 22.3-m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the satellite have the same centripetal acceleration.