Judy (62 kg) is again riding a roller coast and enters the bottom of a dip with a radius of curvature of 11.0 m. at the bottom of the dip, she is traveling with a speed of 19 m/s. what is the net force acting on judys body?

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory