Answer:

Explanation:
Given that:
- moment of inertia of tucked body,

- rotational speed of the body,

- i.e.

- moment of inertia of the straightened body,

<u>Now using the law of conservation of angular momentum:</u>
angular momentum of tucked body=angular momentum of straight body



Answer:
The decided by staring at and observing the stars.
Explanation:
Let x = the angle of elevation for shooting the arrow.
Assume
g = 9.8 m/s²
No wind resistance
The vertical launch velocity is 25.1 sin(x) m/s
The horizontal velocity is 25.1 cos(x) m/s
The time of flight is
24/[25.1 cos(x)] s = 0.9562 sec(x) s
Therefore
0.5*[0.9562 sec(x)]*(9.8) = 25.1 sin(x)
4.6854 = 25.1* sin(x)cos(x)
sin(2x) = 0.3733
2x = sin⁻¹ 0.3733 = 21.92 deg
x = 10.96 deg
Answer: 11 degrees (nearest integer)