Mechanics - Momentum Flashcards
1
Q
What is the equation for momentum?
A
p = mv where p = momentum m = mass v = velocity
2
Q
Is momentum a scalar or a vector?
A
vector
3
Q
Is momentum always conserved?
A
yes as long as there is no external forces acting on the system
4
Q
What kind of momentum do i have to know about in year 1 physics?
A
linear momentum
5
Q
Units of momentum?
A
kgms^-2 or Ns
6
Q
Is there a law that applies to the conservation of momentum?
A
Yes conservation of momentum
7
Q
What equipment is often used to investigate momentum?
A
Air tracks and light gates
8
Q
What is an air track and how does it help investigate momentum?
A
long metal with air holes along it’s surface. The air is blown through the holes reducing friction
9
Q
What are light gates used for?
A
Accurate measurement of time or velocity before and after collision
