When a diver gets into a tuck position by pulling in her arms and legs, she increases her angular speed. before she goes into the tuck position, her angular velocity is 5.5 rad/s, and she has a moment of inertia of 2.1 kg · m2. once she gets into the tuck position, her angular speed is 12.9 rad/s. determine her moment of inertia, in kg · m2, when she is in the tuck position. assume the net torque on her is zero.

0.89534 kgm²

Explanation:

= Final angular velocity = 12.9 rad/s

= Initial angular velocity = 5.5 rad/s

= Initial moment of inertia = 2.1 kgm²

= Final moment of inertia

As there is no external torque the angular momentum is conserved

The final moment of inertia is 0.89534 kgm²

the answer would be a

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles