Hi there I am really hoping a physics tutor could support me in problems 1-4. Been having a hard time lately with circular motion problems, could really use the help. Thanks a ton!! (:

1. A 0.5 kg tennis ball is on a 0.75 m string and swung around a person's head in a horizontal circle at a constant velocity of 5 m/s. a) Determine the acceleration of the ball. _ 7.. G. if: = [5,. 3 338.45" Y\" 0.7 5 b) Determine the tension of the string. ' ' . FT;MJC_ _ l ,9 F+=05L353> ' ' Fr : lees c) Draw a picture showing where the ball would go if the string breaks (probably a top View). % Lea\" 2. A ZSEO kg truck is driving over the top of semi-circular hill with a radius of 150 m with the cruise control set to 17 m s. a) What is the acceleration acting on the car? 7 i g\" 3;, _. 1.1., ~ I9 27 F5?\" F \"EC? b) What is the amount of the centripetal (net) force? FN WI?\" . 217.1113 {0 .9! '35?) r - -. 3 FM mac / 3. A 500 kg roller-coaster car is pulled to the top ofa hill before it rockets downwards to the ground. If the car is traveling at 25 m/s when it reaches the semicircular shaped bottom of the hill with a radius of 40 m, then what will be the acceleration of the car at the lowest point on the track? 4. A ball on the end of a 2 m string is swung around a circle. If it takes 1.5 s to go around the circle each time, then: a) what is the velocity of the ball? b) If the ball has a mass of0.2 kg, then what is the centripetal (net) force acting on the ball? c) If you whipped the ball around faster so that it takes only 0.55 to go around, would the Tension be bigger/smaller/same