Question

1. In racetracks for cars, the outer portion of the track is higher than the inner portion at curves. Why? 2. How is the centripetal force applied to a car to keep it on the pavement when it is rounding a curve? 3.The direction of the centripetal force is directed a. inward    b. outward c. sidewise    d. any of the above 4.Tires of cars have designs to a. make them beautiful b. increase the friction between the tires and the road c. make them durable d. make them more elastic 5.An earth satellite is placed in an orbit whose radius is half that of the moon’s orbit. Is its time of revolution longer or shorter than that of the moon?

Answer 1