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[SOLVED] Momentum and kinetic energy questions
4) If there are no external forces acting on a system in the x direction, but there is an external force acting on the system in the y direction, then the x component of momentum of the system is constant.
True
False
5) If work is done on an object by only conservative forces, then the momentum of that object must be conserved.
True
False
6) The Work-Kinetic Energy theorem is invalid if work is done by a non-conservative force.
True
False
true/false questions about conservation of kinetic energy and momentums...
I don't think I got the concept of the whole conservation thing...
any help would be appreciated:]
Homework Statement
4) If there are no external forces acting on a system in the x direction, but there is an external force acting on the system in the y direction, then the x component of momentum of the system is constant.
True
False
5) If work is done on an object by only conservative forces, then the momentum of that object must be conserved.
True
False
6) The Work-Kinetic Energy theorem is invalid if work is done by a non-conservative force.
True
False
Homework Equations
The Attempt at a Solution
true/false questions about conservation of kinetic energy and momentums...
I don't think I got the concept of the whole conservation thing...
any help would be appreciated:]