Question

The figures above show three stages of a dive performed by an athlete. During the dive, the athlete completes several rotations in midair while traveling from the platform to the surface of the water. Figure 1 shows the athlete just before jumping off the platform. Figure 2 shows the athlete rotating in midair. Figure 3 shows the athlete just about to enter the water.

a. In a clear, coherent paragraph-length response that may also contain figures and/or equations, explain why the angular speed increased between Figure 1 and Figure 2 but decreased between Figure 2 and Figure 3.


b. Is the rotational kinetic energy K2, rotational of the athlete in Figure 2 greater than, less than, or equal to the rotational kinetic energy K1, rotational of the athlete in Figure 1? ____ K2, rotational > K1, rotational ____ K2, rotational < K1, rotational ____ K2, rotational = K1,rotational

briefly explain

Answer 1

$\huge \cal \underline \color{red}★A᭄ɴsᴡΣʀ࿐$

K2, rotational > K1, rotational K2, rotational < K1, rotational.

Answer 2

$\huge \cal \underline \color{red}★A᭄ɴsᴡΣʀ࿐$

K2, rotational > K1, rotational K2, rotational < K1, rotational.