4.2 - Collisions Flashcards
1
Q
Why is momentum important in physics?
A
Because it is conserved
2
Q
What does the principle of conservation of linear momentum state?
A
That in any interaction between bodies, linear momentum is conserved, provided that no resultant external force acts upon the bodies
3
Q
What equation can be used for collision questions?
A
m1u1 + m2u2 = m1v1 + m2v2
4
Q
What is a key thing to note in collision questions?
A
Direction is important
5
Q
Why?
A
Because momentum is a vector
6
Q
What does this mean you should do?
A
Assign either left or right as positive, and stick with it
