The mass of a robot is 34 kg. it is traveling at 2 m/s when it collides with the fence. according to newton's third law, which describes the result? a. the robot exerts a force of 68 n on the fence; the fence absorbs the force. b. the robot exerts a force of 34 n on the fence; the fence moves 2 meters. c. the robot exerts a force of 68 n on the fence; the fence exerts a force of 68 n on the robot. d. the robot exerts a force of 68 n on the fence; the fence exerts a force of 34 n on the robot.