Could you help answer this questions?

1. New York boasts of having the fastest carousel ride in the world The merry-go-round at Eldridge Park takes riders on a spin at 8.0 m/s. The radius of the circle about which the outside riders move is approximately 7.4 m. a. Determine the time for outside riders to make one complete circle. b. Determine the acceleration of the riders. 2. During the spin cycle of a washing machine, the clothes stick to the outer wall of the barrel as it spins at a rate as high as 1800 revolutions per minute. The radius of the barrel is 26 cm. a. Determine the speed of the clothes which are located on the wall of the spin barrel. b. Determine the acceleration of the clothes. 3. The maximum speed with which a 1000-kg car makes a 180-degree turn is 7 m/s. The radius of the circle through which the car is turning is 17 m. Determine the force of friction and the coefficient of friction acting upon the car