momentum Flashcards
1
Q
formula for momentum
A
momentum = mass x velocity
2
Q
what is momentum
A
- vector quantity
- both positive and negative depending on its velocity
3
Q
what is the law of conservation of momentum
A
in the absence of external forces, the total momentum of a system remains the same. The total momentum before the collision if equal to the total momentum after the collision
4
Q
what is the impulse
A
the change in the momentum of an object/mas, it occurs when unbalanced forces act on an object
5
Q
formula for impulse/change in momentum
A
impulse = change in momentum
f x t = mv - mu
where v is final velocity and u is initial velocity
