a 1000-kg jeep travels along a straight 500-m portion of highway (from a to b) at a constant speed of 10 m/s. at b, the jeep encounters an unbanked curve of radius 50 m. the jeep follows the road from b to c traveling at a constant speed of 10 m/s while the direction of the jeep changes from east to south. a) what is the magnitude of the acceleration of the jeep as it travels from a to b? b) what is the magnitude of the acceleration of the jeep as it travels from b to c?