A race care goes around a level circular track with a diameter of 1.00km at a constant speed of 104 km/hr. What is the cars centripetal acceleration in m/s^2

Why should seat belts not be mandatory quick plz

For which pair of objects would adding the same a

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.