Give me the mathematical answer for all question not with words

4. A 60.0 kg child is sitting in a roller coaster at the bottom of a 25.0 m radius dip, the roller coaster is traveling at 29.0 m/s. (A) What is the child's apparent weight? [5 Marks] (B) What speed would be required for her to feel weightless? 5. A 1.7 kg object is swinging from the end of a 0.60 m string in a vertical circle. If the object is moving at uniform speed of 3.4 m/s. [6 Marks] (A) What is the tension in the string at the top of the circle? (B) What is the tension in the string at the bottom of the circle? . A Russian space station in deep space has a radius 175 m. It is rotating to simulate a gravitational field that is 65% of the Earth's gravitational field. How many rotations per minute does the space [4 Marks] station make