Mechanics Definitions Flashcards
1
Q
Principle of conservation of momentum
A
Total momentum of a system is constant provided an external force doesn’t act on it
OR
if net force on system is zero momentum stays constant P initial = P final
2
Q
Impulse of a force
A
Impulse is: force x time for which the force acts
Impulse is change in momentum
3
Q
Linear momentum
A
Mass x velocity
4
Q
Elastic collision
A
Kinetic energy is conserved
5
Q
In elastic collision
A
Kinetic energy is NOT conserved
