Chapter 7&8 Flashcards
1
Q
The farther apart objects are?
A
The weaker their attraction
2
Q
Why does the moon exert a greater gravitational pull on the tides?
A
It’s closer
3
Q
Projectiles thrown at what degree travel the farthest?
A
45
4
Q
How do objects have to be traveling for air drag to affect them?
A
At very high speeds
5
Q
What does horizontal speed have no effect on?
A
Downward acceleration due to gravity
6
Q
How high do most satellites orbit above the Earths surface to be above its atmosphere?
A
150km
7
Q
The higher the orbit of a satellite, what happens to its speed at period?
A
Speed decreases, period becomes longer
8
Q
The greater the masses of objects are the greater their what?
A
Attraction
