# test questions

```1. P = work/time. Measured in Watts
Power
Elastic potential energy
Joule
Work-energy principle
2. The ability to do work.
Kinetic energy
Work
Power
Energy
3. The total energy is neither increased nor decreased in any process. Energy can
be transformed from one form to another, and transferred from one object to
another, but the total amount remains constant.
Hooke's law
Law of conservation of energy
Nonconservative forces
Work-energy principle
4. Forces which the work does not depend on the path taken rather then the initial
and final positions. Eg: gravity.
Principle of conservation of mechanical energy
Dissipative forces
Nonconservative forces
Conservative forces
5. Forces that its work depends on the path. Eg: friction.
Dissipative forces
Nonconservative forces
Principle of conservation of mechanical energy
Conservative forces
6. The net work done on an object is equal to the change in the object's kinetic
energy.
Energy
Potential energy
Total mechanical energy
Work-energy principle
7. Forces that dissipate mechanical energy rather then the total energy.
Principle of conservation of mechanical energy
Conservative forces
Dissipative forces
Nonconservative forces
8. AKA spring equation
Potential energy
Hooke's law
Law of conservation of energy
Kinetic energy
9. If only conservative forces are acting, the total mechanical energy of a system
neither increases nor decreases in any process. It is conserved.
Principle of conservation of mechanical energy
Dissipative forces
Nonconservative forces
Conservative forces
10. The center point of which gravity is acting on.
Elastic collision
Center of gravity
Inelastic collisions
Center of mass
11. The sum of all the forces acting on the system is equal to the total mass of the
system times the acceleration of its center of mass. FsubNet = M * a(center of
mass)
Newton's second law for a system of particles
Newton's second law relative to momentum
Isolated system
Center of mass
12. One point in a mass that moves in the same path that a particle would move if
subjected to the same net force.
Center of gravity
Center of mass
Conservation of momentum
Elastic collision
13. A collision in which two objects stick together as a result.
Center of gravity
Inelastic collisions
Completely inelastic
Elastic collision
14. F = p/t. The rate of change of momentum of an object is equal to the net force
applied to it.
Isolated system
Newton's second law relative to momentum
Newton's second law for a system of particles
Conservation of momentum
15. Collisions in which kinetic energy is not conserved.
Inelastic collisions
Completely inelastic
Center of gravity
Elastic collision
16. A collision in which kinetic energy is conserved.
Elastic collision
Center of gravity
Completely inelastic
Inelastic collisions
17. Momentum can be transferred, but nor created or destroyed. MVsubA + MVsubB
= MVsubA + MVsubB
Center of mass
Completely inelastic
Inelastic collisions
Conservation of momentum
18. A system of which the net external force is zero.
Newton's second law for a system of particles
Newton's second law relative to momentum
Isolated system
Elastic collision
19. The line of which the center of a rotating circle moves about.
Angular momentum
Rigid object
Axis of rotation
Angular velocity
20. (τ) The moment of the force about the axis. τ = rF
Frequency
Torque
Lever arm
21. An object with a definite shape that does not change.
Frequency
Rigid object
Axis of rotation
Angular velocity
22. The distance from the axis of rotation to the line along which the force acts.
Lever arm
Axis of rotation
Moment arm
23. Kinetic energy of a rotating object. 1/2 Iω^2
Rotational kinetic energy
Average angular acceleration
Rigid object
Average angular velocity
24. The angle subtended by an arc whose length is equal to the radius. θ = l/r, 360