Unit 1 - Collisions, Explosions & Impulse Flashcards
1
Q
Is momentum a vector or Scalar?
A
Vector
2
Q
What is the law of conservation of linear momentum?
A
In the absence of net external forces total momentum before = total momentum after
3
Q
What is a collision?
A
An event when two objects apply a force to each other for a relatively short time
4
Q
What is an Inelastic collision?
A
A collision in which only momentum is conserved
5
Q
What is an elastic collision?
A
A collision in which momentum & kinetic energy are conserved
6
Q
What is the equation for impulse?
A
Ft = mv - mu
7
Q
How is impulse calculated from a force-time graph?
A
Impulse = area under the graph
8
Q
What is the momentum equation?
A
p = m v
