3.3 movement in space Flashcards
1
Q
what is the gravitational field strength of the sun?
A
270N/kg
2
Q
what is air resistance
A
the friction of the air on a moving object
3
Q
define vacuum
A
a space/area with no particles
4
Q
what is centripetal force?
A
force that keeps the object moving in a circular path
5
Q
how many days for the moon to orbit the earth?
A
27 days
6
Q
what is an axis?
A
an invisible line in the middle of a planet
7
Q
how many hours does it take for the earth to spin on its axis?
A
24 hours
8
Q
how many days does it take for the earth to orbit the moon?
A
27 days
