If a large cloud of gas and dust is initially rotating,and it begins to contract without losing any mass,it will rotate
A) faster.
B) more slowly.
C) at a constant rate.
D) at a rate that initially decreases and then increases as the disk shape is achieved.

Question

Quizplus · Accepted Answer

According to the law of conservation of angular momentum, as the cloud of gas and dust contracts without losing any mass, its rotational speed must increase to conserve its angular momentum.

If a Large Cloud of Gas and Dust Is Initially