Definitions: Mechanics Flashcards
1
Q
Define Elastic Collision.
A
A collision in which kinetic energy is conserved (for example a bouncy ball on a hard floor).
2
Q
Define Inelastic Collision.
A
A collision in which kinetic energy is not conserved (for example a stone falling on a hard floor).
3
Q
Give Newton’s Second Law (the momentum version).
A
The resultant force acting on an object is equal to the rate of change of its momentum.
4
Q
What does the area under a force-time graph show?
A
The impulse (or change in momentum).
5
Q
Define Angular Velocity.
A
The angle covered in the circle per unit time.
