Term

Definition


Term
How did Newton discover gravity? 

Definition
While studying why planets move the way they do, he eveloped the idea of gravity. Knowing that planets orbit in eliptical paths, so Newton realized they must be acted upon by an unbalenced force, gravity 


Term
What is the Law of Universal Gravitation? 

Definition
Every object in the universe pulls on every other object 


Term
What does the strength of gravity depend on? 

Definition


Term
What is the equation to determine the force of gravity? 

Definition
M_{1}M_{2}
F = G 
d^{2} 


Term

Definition


Term
What is told to us by the value of G? 

Definition
Gravitational force is really weak 


Term
What is the equation for wieght? 

Definition


Term

Definition
Acceleration of Gravity
9.8 m/s^{2}
G ≠ g 


Term

Definition
Any object that mmoves through air or space, acted on only by gravity ( possibly air friction) 


Term

Definition


Term
Describe the horizontal component of trajectory. 

Definition
If no friction is present, moves at constant velocity 


Term
Describe the vertical component of trajectory. 

Definition
Accelerates downward due to gravity 


Term
Which component of trajectory isnt affected by gravity? 

Definition


Term
What happens at different launch angles? 

Definition
The altitude and ranges differ. 


Term
What happens when two launch angles add to 90°? 

Definition
The objects fall in the same place 


Term

Definition
When an object is falling under the influence of only gravity



Term
What is the equation for the velocity of an object in free fall? 

Definition


Term
What is the equation for the distance of an object that has free fallen?


Definition


Term
Describe the trajectory of an projectile thrown up. 

Definition
At top = o m/s
All other arrows have same velocity
[image] 

