Q. An Indy car with a speed of 120 km/h goes around a level, circular track with a radius of 1 km. What is the centripetal acceleration of the car?
Q. A wheel rotating with a constant angular acceleration turns through 21 revolutions during a 2s tiem interval. its angular velocity at teh end of this interval is 17 rad/s. what is the angular acceleration of the wheel? note that the initial angular velocity is not zero.