## Question

###### QUESTION 9ball is being swung faster and faster in horizontal circle of radius 15 cm: When the speed reaches 20 m/s the tension (T) in the string is 500 N and the string breaks; What is the mass of the ball?A. 3.75 kgB. 18.75 kg187.5 gD.375.0 kgQUESTION 10The passengers in car driving over hill at a speed of 12 m/s feel weightless Calculate the radius of curvature of the hillA. 144.0 mB. 12.0 mC.14.67 mD.1.22 m

QUESTION 9 ball is being swung faster and faster in horizontal circle of radius 15 cm: When the speed reaches 20 m/s the tension (T) in the string is 500 N and the string breaks; What is the mass of the ball? A. 3.75 kg B. 18.75 kg 187.5 g D.375.0 kg QUESTION 10 The passengers in car driving over hill at a speed of 12 m/s feel weightless Calculate the radius of curvature of the hill A. 144.0 m B. 12.0 m C.14.67 m D.1.22 m

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