Answer Key
1) Bringing your knees in decreases your distance from the center of the circle, which decreases your moment of inertia. This then increases your velocity, which helps you get around successfully in the back-tuck. If you don't, you could face plant!
2) She was the first to do a back-tuck on the balance beam, which changed the dynamic of beam routines by putting the focus on more acrobatic skills.
3) It increases the time of your landing which decrease the force on the gymnast.
4) L=Iω
5) If you do not do that, you will not be able to make it around in the back-tuck, because you will not have the momentum to propel yourself around.
6) You want more friction so that when you land a skill you do not slip, as some materials have a higher coefficient of friction (and thus higher friction) than others. For example, silk would be very slippery because it has a low coefficient of friction, while leather is less slippery because it has a higher coefficient of friction.
2) She was the first to do a back-tuck on the balance beam, which changed the dynamic of beam routines by putting the focus on more acrobatic skills.
3) It increases the time of your landing which decrease the force on the gymnast.
4) L=Iω
5) If you do not do that, you will not be able to make it around in the back-tuck, because you will not have the momentum to propel yourself around.
6) You want more friction so that when you land a skill you do not slip, as some materials have a higher coefficient of friction (and thus higher friction) than others. For example, silk would be very slippery because it has a low coefficient of friction, while leather is less slippery because it has a higher coefficient of friction.