As a meteor moves from a distance of 16 Earth radii to a distance of 2 Earth radii from the center of Earth, the magnitude of the gravitational force between the meteor and the Earth becomes

A 1.00 10³ kg car is driven clockwise around a flat circular track of radius 25.0 m. The speed of the car is a constant 5.00 m/s. What minimum friction force must exist between the tires and the road to prevent the car from skidding as it rounds the curve?