Astro set 2
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The animation shows a collapsing cloud of interstellar gas. As the cloud collapses, the force of gravity drawing the cloud inward __________ because __________.
- (Blank 1) gradually becomes stronger
- (Blank 2) the strength of gravity follows an inverse square law with distance
As the cloud shrinks in size, its rate of rotation __________ because __________.
- (Blank 1) speeds up
- (Blank 2) its total angular momentum is conserved
Suppose your car hits a bug while driving on the expressway. Which of the following is true?
Newton's Version of Kepler's 3rd Law is most useful for....
Finding the mass of a large object being orbitted by a smaller one.
Which one of the following describes an object that is NOT accelerating?
A roller coaster on a straight, flat track moving at 10 miles per hour.
When a spinning ice skater pulls in his arms, he spins faster because _________.
his angular momentum must be conserved, so reducing his radius must increase his speed of rotation
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