L3 Flashcards
1
Q
what is a force
A
a push or a pull on an object
2
Q
what is gravity
A
a force that attracts all objects toward each other
3
Q
Who invented the law of universal gravitation?
A
Sir Isaac Newton
4
Q
What does hte Law of Universal Gravitaion state?
A
that all objects in the universe attract one another
5
Q
What are the 2 factors that affect gravity
A
mass and distance between objects
6
Q
what is mass
A
the amount of matter in an object
7
Q
True or false: more mass, more gravitational pull
A
true
8
Q
True or false:Greater distance between objects, greater gravitational pull
A
false…LESS distance or WEAKER pull
9
Q
What is inertia?
A
an objects resistance to a change in motion
10
Q
What 2 factors keep an object in motion?
A
gravity and inertia
