Ineed : ) i'm really bad a physics and i'm stuck with this worksheet : ( i'll fan and medal each year at a college, there is a tradition of having a hoop rolling competition. alex rolls his 0.25 kg hoop down the course. if the hoop has a radius of 0.5 m, what is the moment of inertia of alex’s rolling hoop? a particular planet has a moment of inertia of 9.74 × 1037 kg•m2 and a mass of 5.98 × 1024 kg. based on these values, what is the planet’s radius? jessica stretches her arms out 0.6 m from the center of her body while holding a 2 kg mass in each hand. she then spins around on an ice rink at 1.1 m/s. what is the combined angular momentum of the masses? if she pulls her arms in to 0.15 m, what is her linear speed if the angular momentum remains constant? @ganeshie8 @zepdrix @vocaloid @imqwerty @whitemonsterbunny17 @spacemountain,