# Further Mechanics

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1. State the conservation for momentum
In a collision momentum within any plane is always conserved. The total momentum of a system is constant, unless acted on by and external force.
2. What is conserved during elastic and non-elastic collisions ?
In Elastic collisions both momentum and Kinetic energy is conserved

In inelastic collisions momentum is conserved but kinetic energy is not conserved
3. What is centripetal force ?
Centripetal force is the resultant force (towards the centre) required by any mass to move in a circular path at a constant speed. (It is constant in magnitude, but keeps changing direction to point towards the centre. Therefore it does no work)

4. What is Angular Speed (ω) ?
The angle rotated per second in radians per second. (rad s-1)

ω=  v=rω   ω=2f
5. What is linear speed?
Tangential velocity at radius, r from the centre of rotation. (v=rω)
 Author: jjeffery ID: 266277 Card Set: Further Mechanics Updated: 2014-03-14 10:17:52 Tags: A2 Physics Folders: Description: General questions on further mechanics Show Answers: